Prince William and Kate, The Duke and Duchess of Cambridge, on Tuesday revealed to the world their latest title: Parents. Their newborn son has a title too, but no name, yet. 
 
 Asked by reporters outside St. Mary's hospital in London if they had settled on a name, William answered saying, they were "still working" on it. 
 
 "We'll have that as soon as we can," he said, shortly before loading his new bundle – buckled into a car seat – into a black Range Rover. The new dad then drove his family home to Kensington Palace, where he, Kate and their newborn arrived safe and sound just after 2:45 p.m. ET for the baby's first night out of hospital. 
 
 'HRH Prince (insert name) of Cambridge' 
 
 The name of the royal couple's first-born, and third great-grandchild of Queen Elizabeth, remains a mystery, with the palace saying in a statement released Monday that there's "no news on names." 
 
 However, the baby, third in the line of succession after Prince Charles and William, will carry the title "His Royal Highness Prince (insert name) of Cambridge." 
 
 The big reveal 
 
 Prince William and his wife Kate, the Duchess of Cambridge, appear with their baby son outside the Lindo Wing of St. Mary's Hospital in central London on July 23, 2013. (Suzanne Plunkett/Reuters) Prince William and his wife Kate, the Duchess of Cambridge, appear with their baby son outside the Lindo Wing of St. Mary's Hospital in central London on July 23, 2013. (Suzanne Plunkett/Reuters) 
 
 On Tuesday afternoon, William and Kate gave throngs of media and well-wishers outside St. Mary's Hospital in London as well as the world what they had long been anticipating — the world's first view of the royal couple's baby son, and the third in line to the British throne. 
 
 The Duke of Cambridge, wearing a blue shirt, and Kate, resplendent in a blue polka-dot dress, emerged from the doors of the hospital's Lindo Wing on Tuesday evening local time, with the new mother carrying the tiny prince in her arms for his first public appearance since his birth Monday. 
 
 Shortly after waving to the crowd and describing to reporters how she felt as "very emotional," Kate handed the baby to the doting new dad. 
 
 "It's very special," William told a crowd of media gathered around the hospital steps. "I'll remind him of his tardiness when he's a bit older," he said jokingly when asked why it took so long for the royal couple to leave the hospital. 
 
 When asked who the baby looks like, William said, "He's got her looks thankfully." To which Kate gushed, "No, no, no." 
 
 William added: "He's a big boy, he's quite heavy" and laughed when a reporter asked him about the baby's hair. 
 
 "He's got way more than me, thank God," he said. 
 
 The young family's first public appearance together recalls a similar appearance three decades ago, when Princess Diana and Prince Charles carried the newborn William out of the hospital to pose for photographs on the same steps in 1982. 
 
 The baby's debut came after William's father, Charles, Prince of Wales, and his wife Camilla, Duchess of Cornwall, visited the London hospital. 
 
 After about a half-hour visit, Charles and Camilla left the doors of the hospital's private Lindo Wing, with Charles saying his grandson was "doing marvellously." 
 
 The royal birth 
 
 Following the birth of the new prince at 4:24 p.m. BST (11:24 a.m. ET) at a weight of eight pounds, six ounces, Britons and people around the world have been joining the Royal Family in celebration. But the biggest question since then had been when will the royal baby make his public debut? 
 
 Earlier Tuesday, William and Kate were enjoying their last hours alone with their son, and in the afternoon, Kate's parents, Carole and Michael Middleton, visited the couple and their new grandson. 
 
 The Middletons spoke briefly with the media after their visit to the hospital. 
 
 "He’s absolutely beautiful," Carole Middleton said. 
 
 "Mother, son and father are all doing well this morning," a Kensington Palace spokesman noted Tuesday. 
 
 The palace also issued a statement from William and his wife, the former Kate Middleton: 
 
 "We would like to thank the staff at the Lindo Wing and the whole hospital for the tremendous care the three of us have received. We know it has been a very busy period for the hospital and we would like to thank everyone — staff, patients and visitors — for their understanding during this time." 
 
 Salutes for the new prince 
 
 British Prime Minister David Cameron paid tribute to the royal couple by saying, "They'll make wonderful parents." 
 
 After an impromptu party at Buckingham Palace, more celebrations were held Tuesday, including a 62-gun salute outside the Tower of London to mark the arrival of the royal baby. Riders in uniform trotted past the palace to Green Park, where six field guns fired 41 blank rounds. 
 
 The baby already has a building dedicated to him. 
 
 Australian Prime Minister Kevin Rudd said an enclosure at Sydney's Taronga Park Zoo would be named after the prince as part of a gift from the country. The government would donate 10,000 Australian dollars on the young prince's behalf toward a research project at the zoo to save the endangered bilby, a rabbit-like marsupial whose numbers are dwindling in the wild. 
 
 The prince's name, when known, would be added to the bilby enclosure. 
 
 "I don't know if the Royal Family would need this, but we'll probably give them a free pass to Taronga Park Zoo as well," Rudd said. 
 
 In Canada, Prime Minister Stephen Harper hailed the arrival of "a future sovereign of Canada," and said he's looking forward to seeing the new son of the Duke and Duchess of Cambridge. 
 
 Canada's tribute to the birth of the future king included the CN Tower and Niagara Falls getting awash in blue on Monday evening. 
 
 The CN Tower in Toronto went blue just after 9 p.m. ET on Monday evening in commemoration of the royal baby boy’s birth. (Evan Mitsui/CBC) The CN Tower in Toronto went blue just after 9 p.m. ET on Monday evening in commemoration of the royal baby boy’s birth. (Evan Mitsui/CBC) 
 
 Cian Horrobin, a spokesman for the Monarchist League, said the birth marked the beginning of a lifelong relationship for Canadians with "this boy who will one day be our king." 
 
 Massive interest in the royal birth stems from the popularity of Kate and William, who have helped make the monarchy "cool," British royal commentator and author Richard Fitzwilliams told CBC News on Tuesday. 
 
 The couple has "enormous public support worldwide," and the baby is "a mix between the new and the old," Fitzwilliams said, adding that the royal couple's wedding on April 29, 2011, helped rejuvenate the institution of the monarchy. 
 
 Even those opposed to the monarchy welcomed the prince's arrival. 
 
 Tom Freda, director of the organization Citizens for a Canadian Republic, said any news involving the Royal Family renews the debate over the relevance of a monarchist system, "and debate is good." 
 
 In New Zealand, royalist group Monarchy New Zealand said it had organized a national lightshow, with 40 buildings across the island lit up in blue to commemorate the royal birth, including Sky Tower in Auckland, the airport in Christchurch, and Larnach Castle in the South Island city of Dunedin. 
 
 British media joined in the celebration. 
 
 "It's a Boy!" was splashed across many U.K. front pages, while the Sun newspaper temporarily changed its name to "The Son" in honour of the tiny monarch-in-waiting. 
 
 With files from The Associated Press ||||| Image caption The duchess's due date has not been officially announced 
 
 The Duchess of Cambridge is in labour, as the world's media gather outside the hospital awaiting news of the latest addition to the Royal Family. 
 
 Catherine and the Duke of Cambridge arrived by car at St Mary's Hospital in Paddington, west London, at 06:00 BST. 
 
 Kensington Palace said she was in the early stages of labour, which was progressing as normal. 
 
 The couple do not know the sex of their first child, who will be third in line to the throne. 
 
 The world's media have been camped outside St Mary's for days in anticipation of the birth. The due date had never been officially announced but had widely been expected to be mid-July. 
 
 Royal vehicles were seen at a back entrance to the hospital at about 06:00 BST, with the announcement coming from Kensington Palace 90 minutes later. 
 
 Police presence 
 
 The couple, both 31, travelled to the hospital without a police escort, their spokesman said. 
 
 Analysis The statement from Kensington Palace contains just 45 words. Such is the global fascination with this baby, those words will be translated into countless languages and endlessly repeated until fresh information is provided once the child has been born. This intense international interest highlights the challenges facing William and Catherine. The birth of a child is a deeply personal and private moment. But in their case, it will also be the cause of much wider celebration. Prince Charles had a similar experience when Prince William was born. He wrote of being rewarded by seeing "a small creature" who "belonged to us even though he seemed to belong to everyone else as well". Thirty-one years on, the world waits while the Duchess of Cambridge is in labour - something which is not without risk. Her baby will represent the beginning of family life for the couple and will offer the House of Windsor renewed hope for the future. 
 
 The duchess is being tended by a top medical team led by the Queen's gynaecologist Marcus Setchell, who delivered the Countess of Wessex's two children. Alan Farthing, gynaecologist to the Royal Household, will be assisting. 
 
 She will give birth in the hospital's private Lindo Wing, where Prince William and his brother Prince Harry were born. 
 
 There is a strong police presence around the hospital and two police officers are guarding the entrance to the private wing. The media scrum parked outside is having to contend with the heat on what is the hottest day in the UK since July 2006. 
 
 BBC royal correspondent Peter Hunt said the duchess was thought to be one week past her due date. 
 
 "The royal statement contains 45 words. All there will be to sustain the world's media until the baby is born," he tweeted. 
 
 Last week, the Queen joked about the imminent arrival of the newest member of her family, saying she hoped the baby would be born before she went on holiday to her private Balmoral estate in Scotland. 
 
 During a visit to the National Railway Museum in York, the Prince of Wales was asked by the members of the press and the public about the birth of his first grandchild but he did not divulge any information. 
 
 Easel announcement 
 
 Prince William has been with his wife on annual leave and will have two weeks' paternity leave from his job as an RAF search and rescue helicopter pilot. 
 
 It is believed the next time the couple will be seen in public is when they appear on the steps of the hospital with their baby. 
 
 Image caption Crowds gathered on Monday morning for the changing of the guard at Buckingham Palace, with many interested in news of the royal baby Image caption Members of the world's media had been camped outside St Mary's Hospital for weeks Image caption The crowds outside the hospital grew steadily through the morning as journalists and royal watchers gathered to await further news Image caption Broadcasters sprung into action early on Monday after Kensington Palace announced the Duchess of Cambridge was in the early stages of labour Image caption Journalists were not the only ones waiting outside the Lindo Wing. Royal supporter Terry Hutt has been camped outside for nearly two weeks Image caption Tourists also gathered outside the hospital after news broke that the third in line to the throne was on the way Image caption The Duke and Duchess of Cambridge were married in April 2011 Image caption The announcement that Catherine was pregnant came in December when she was admitted to hospital with acute morning sickness Image caption Catherine made her final public appearance at celebrations for the Queen's official birthday on 15 June previous slide next slide 
 
 Plans for how the birth will be announced were amended by Kensington Palace officials on Monday evening. 
 
 A formal press release containing details of the birth will now be issued shortly before a formal signed bulletin leaves the hospital for Buckingham Palace. 
 
 It is custom for news of royal births and deaths to be attached to the railings of the palace, but in this case it will be displayed on an ornate easel in the forecourt of the palace. 
 
 The Queen, senior members of the Royal Family and the duchess's family - if they are not at the hospital - will be told about the birth first. 
 
 Then a royal aide will take a bulletin, signed by key medical staff, from the hospital to the palace under police escort. 
 
 Media playback is unsupported on your device Media caption The Duke and Duchess of Cambridge's first child will be third in line to the British throne 
 
 Under new laws to succession the baby will remain third in line to the throne regardless of gender and the gender of any subsequent siblings. 
 
 Prime Minister David Cameron spoke about the excitement surrounding the imminent arrival, and also about the recent changes to the rules of succession. 
 
 Speaking on BBC Radio 4's Woman's Hour, he said it was "pretty much a done deal". 
 
 'Thoughts and prayers' 
 
 All the nations of the Commonwealth have agreed, he said, even if the changes had not yet passed through their parliaments. 
 
 The Archbishop of Canterbury, who is likely to carry out any christening, has sent his best wishes to the couple. 
 
 "My thoughts and prayers are with Kate and the whole family on this enormously special day," tweeted the Most Reverend Justin Welby. 
 
 How will the birth be announced? An official announcement signed by key medical staff will be driven to Buckingham Palace under police escort 
 
 It will be displayed on an ornate easel in the palace forecourt 
 
 The gender and weight are likely to be included in the announcement, but the name is not expected to be revealed straight away 
 
 An announcement will then be posted on Twitter and Facebook, and the media will be informed 10 curious things about the royal birth How royal births have been announced 
 
 There is global interest in the royal birth and it has been the subject of much speculation, particularly when it comes to names. 
 
 Bookmaker William Hill says George is the favourite for a boy and, after a flurry of bets, Alexandra - one of the Queen's middle names - for a girl. Charlotte is also thought to be a contender. 
 
 The new royal baby will be the Queen's third great-grandchild. It will be expected to take the throne following reigns by Prince Charles and then Prince William. 
 
 The couple announced they were expecting their first child in December after the duchess was admitted to hospital suffering from severe morning sickness. 
 
 Since the announcement, the duchess has carried out 19 days of public engagements before going on maternity leave in the middle of June. 
 
 Catherine's final public appearance before the birth was at the Trooping the Colour ceremony in June. 
 
 The Duke and Duchess of Cambridge were married at Westminster Abbey in April 2011, watched on television by hundreds of millions of people around the world.
– According to the rumor mill, Kate Middleton could be popping out a royal baby any day now, so of course the gossip pages are already filled with "news" of the as-yet-unborn heir to the throne. You're not going to find out anything really interesting, like the sex or the name, but we do have the baby's official title for you: He or she will be the Prince or Princess of Cambridge, the Daily Mail reports. The first Prince or Princess of Cambridge, in fact, which the mayor of the city says is a "great honor." And there's another royal baby on the way, too: Prince William's cousin, Zara Phillips, who married Mike Tindall in 2011, is expecting her first baby, the Telegraph reports. That little bundle of joy will be 16th in line to the throne. (So, we can apparently assume that whole groping-another-woman thing ended satisfactorily for the couple.) More royal news: Prince Andrew has become the first British royal to start a personal Twitter account, the BBC reports.