Barbara Walters to Anchor a Special Edition of "20/20″ on Tuesday, July 23 at 10:00 PM, ET As the world celebrates the birth of the first child of Kate and Prince William, the Duchess and Duke of Cambridge, ABC News is providing viewers and users with comprehensive, multiplatform coverage. The royal baby is not just the future heir to the British throne, but to the monarchies of 16 independent countries or "realms" including Australia, Canada, New Zealand, Barbados, the Bahamas and Jamaica. Amy Robach and London-based correspondent Lama Hasan are reporting from St. Mary's Hospital and Buckingham Palace for all broadcasts and platforms including "Good Morning America," "World News," and "Nightline." In addition, Barbara Walters and Senior Medical Contributor Dr. Jennifer Ashton, a board-certified Ob-Gyn, are contributing to from New York along with several Royal experts. Barbara Walters will anchor a special edition of "20/20" - "The Royal Baby: Heir to the Throne" on Tuesday, July 23 at 10:00 p.m., ET on the ABC Television Network. Now that he is finally here, "20/20″ and Barbara Walters take you inside the world of the new heir. From the lifestyle and inheritance he will enjoy, to the extended family and privileged babies he will soon call playmates. With Amy Robach reporting from London, viewers will get all the details on the royal birth, plus what's next for the tiny prince. Also, how will the grandmother he will never meet, Diana, influence his life? And what is required to be a nanny for a future monarch? ABC News aired a special report to the ABC Television Network at approximately 2:37 a.m., ET on Monday, July 22 anchored by John Muller and Diana Perez to cover the news that Kate Middleton has been admitted to the hospital to have the royal baby. Watch: http://abcn.ws/1b6YKDd. ABC News also broadcast a special report to the ABC Television Network to cover the birth announcement at 3:29 p.m., ET. David Muir anchored from ABC News World Headquarters in New York. He was joined by Robach and Hasan in London as well as Barbara Walters and Dr. Ashton in New York. Watch: http://abcn.ws/13UBzSJ. ABC News Digital is providing live coverage of the royal birth with original live video programming on the ABC News Live Page. In advance of the birth, ABC News produced extensive original digital videos, editorial content and interactives that have increased overall user engagement across our desktop and mobile properties - including the Royal Baby Guestbook, which has received thousands of entries and allows users to send messages to the royal couple and share digital gifts to the royal heir. ABC News online content is sponsored by Nestle and can be found here - http://abcn.ws/12DJmJb. ABC NewsOne, the network's affiliate news service, is delivering coverage for nearly 200 ABC affiliates, stations and clients throughout the day with Correspondent Nick Schifrin reporting from London. ABC News Radio is providing reports to stations from ABC News Radio Correspondent Tom Rivers.