Have mercy — John Stamos is going to be a dad! The beloved Fuller House star opens up about expecting a baby with fiancée Caitlin McHugh. Subscribe now for the exclusive baby news — only in PEOPLE. 
 
 John Stamos‘ house is about to get a little fuller! 
 
 The actor, 54, and his fiancée Caitlin McHugh are expecting their first child, Stamos reveals to PEOPLE exclusively in this week’s cover story. 
 
 In the latest episode of The Jess Cagle Interview (streaming now on People TV), Stamos tells PEOPLE’s Editor-in-Chief Jess Cagle that he and McHugh “talked about” having a baby in the past — and everything just fell into place. 
 
 John Stamos Brian Bowen Smith 
 
 “We have the same morals and the same values, that all clicked nicely. So we said, ‘Oh, well, maybe we should have a family,’ ” says the Fuller House star. 
 
 McHugh suggested, “‘Maybe we should have a kid [before we get married]’ and I said, ‘Why?’” Stamos recalls, revealing his fiancée jokingly responded, “Because you’re old.” 
 
 John Stamos 
 
 Watch the full episode of The Jess Cagle Interview: John Stamos, streaming now on PeopleTV. Go to People.com/peopletv, or download the app on your favorite streaming device. 
 
 After almost two years of dating, Stamos and the model and actress, 31, were engaged Oct. 22 at Disneyland — one of Disney Parks super fan McHugh‘s favorite places. 
 
 The actor made a short film of romantic moments from animated Pixar and Disney films, ending the display with The Little Mermaid — which encouraged Stamos to “just ask the girl.” 
 
 Want all the latest pregnancy and birth announcements, plus celebrity mom blogs? Click here to get those and more in the PEOPLE Babies newsletter. 
 
 RELATED VIDEO: John Stamos and Caitlin McHugh Are Engaged! 
 
 RELATED: 11 Completely Swoon-Worthy Stories Behind Stars’ Proposals 
 
 “The [pregnancy] happened. Then I said, I better have a ring on her finger because it’s the right thing to do, and I wanted to marry her anyway,” Stamos tells PEOPLE. “So I called her parents to ask, and it was like, ‘You better!’ “ 
 
 “The look on John’s face when I told him we were pregnant was priceless,” adds McHugh. “It was the look of a man who has wanted a family of his own but wasn’t sure it was going to happen for him. Now it is!” 
 
 Caitlin McHugh and John Stamos Michael Buckner/Variety/REX/Shutterstock 
 
 RELATED: John Stamos on Cloud 9 Now That He’s Engaged to Caitlin McHugh: “I’ve Been Waiting for the Perfect Girl for a Decade” 
 
 The couple are overjoyed to be adding to their family — though they’re keeping mum on the baby’s sex for now — with Stamos admitting that he “always wanted to be a dad” but wasn’t sure it was in the cards. “People would say, ‘You should have a child,’ ” he tells PEOPLE. “I was like, ‘That ship has sailed.’ “ 
 
 Luckily for Stamos, that ship is anchored quite steadily — and the star can’t wait for its next voyage, during which his feet will be planted firmly on board. 
 
 “I’ll be a fun dad. I’ve been practicing for a long time,” he says, joking, “I’ve done every schtick you can do with a baby on TV … all the bits and jokes and diaper gags. I’ll probably just do all that stuff.” 
 
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 The mom-to-be couldn’t agree more about Stamos being ready for fatherhood, praising her fiancé for having “the biggest, most loving and generous heart of anyone I know.” 
 
 “I greatly admire his originality, creativity, ambition, work ethic and humor — all qualities I’m sure he’ll pass down to his child,” McHugh tells PEOPLE. “He’s always been wonderful with kids, and I’m sure he will be an amazing father.” 
 
 For a closer peek into John Stamos and Caitlin McHugh’s happily ever after, pick up the latest issue of PEOPLE, on newsstands Friday. 
 
 John Stamos on the cover of PEOPLE 
 
 RELATED: John Stamos and Fiancée Caitlin McHugh’s Love Story Is Straight Out of a Disney Movie 
 
 Will Stamos’ natural gift translate to continuing to expand his family after baby No. 1 is born next year? “I think so,” says the Grandfathered alum. “Caitlin wants to have other kids too.” ||||| Story highlights Stamos shared the news with People 
 
 He joins other A-listers who became dads later in life 
 
 (CNN) It's about to be a "Fuller House" for John Stamos. 
 
 The actor shared with People magazine that he is set to become a first-time father at the age of 54. 
 
 The actor, who became everyone's favorite uncle with his role on the hit 1990s sitcom "Full House," joins other celebs, including George Clooney, to welcome fatherhood in their 50s. 
 
 Photos: A-list dads over 50 Photos: A-list dads over 50 John Stamos announced in December that at the age of 54 he will become a dad as his fiancée actress Caitlin McHugh is pregnant. Other male celebs have become fathers in their later years, too. Hide Caption 1 of 11 Photos: A-list dads over 50 At 56, George Clooney became a father to twins. He and Amal Clooney welcomed Ella and Alexander Clooney in June. Hide Caption 2 of 11 Photos: A-list dads over 50 Alec Baldwin had his second child at 55. He has gained recent notoriety for his "Saturday Night Live" impersonations of Donald Trump, who had his youngest son, Barron, at 59. Hide Caption 3 of 11 Photos: A-list dads over 50 "Parenthood" actor Steve Martin became a first-time dad at 67 with wife Anne Stringfield. Hide Caption 4 of 11 Photos: A-list dads over 50 Clint Eastwood was 66 when he had his seventh child, Morgan, with his second wife, Dina Ruiz. Hide Caption 5 of 11 Photos: A-list dads over 50 Television and radio personality Larry King had two children in his mid-60s with wife Shawn Southwick. Hide Caption 6 of 11 Photos: A-list dads over 50 Double Oscar-winning actor Robert De Niro was 68 years old when he and Grace Hightower had daughter Helen Grace. Hide Caption 7 of 11 Photos: A-list dads over 50 Rod Stewart was 66 when he welcomed his seventh child, Aidan Patrick Stewart. Hide Caption 8 of 11 Photos: A-list dads over 50 Playboy founder Hugh Hefner was 65 when son Cooper was born to his then-wife Kimberley Conrad. Hide Caption 9 of 11 Photos: A-list dads over 50 Director Woody Allen is about 65 years older than his youngest daughter, Manzie, whom he adopted with wife Soon-Yi Previn, who is the adopted daughter of Allen's former partner, Mia Farrow. Hide Caption 10 of 11 Photos: A-list dads over 50 At 56, former "Late Show" host David Letterman announced that he would be having a child with longtime partner Regina Lasko. Hide Caption 11 of 11 
 
 Stamos told People he and his fiancée, actress Caitlin McHugh, had discussed starting a family. 
 
 "We have the same morals and the same values, that all clicked nicely," Stamos said. "So we said, 'Oh, well, maybe we should have a family.'" 
 
 Read More ||||| Dave Coulier of Full House Is Married! 
 
 The three funniest guys I know, for 28 years, right after Dave and Melissa made it legal. Love these guys! pic.twitter.com/D5BT3Qt9mw — jeff franklin (@fullhouseguy) July 3, 2014 
 
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 There were plenty of Full House RSVPs when Dave Coulier swapped I-do's with Melissa Bring.The comedian, who played Joey on the beloved '90s sitcom, married his longtime love on Wednesday in Montana, Coulier's rep confirms exclusively to PEOPLE. In the house? Former costars Candace Cameron Bure, John Stamos and Andrea Barber, who'd shared pics of the lead-up to the wedding on Instagram on Wednesday.Bure shared a photo of herself and Barber, presumably at the ceremony, on Instagram Wednesday night, with the former costars sporting colorful dresses, cocktails and sunglasses between them."Stunning country wedding with great friends #BFF," she wrote.Coulier, 54, and Bring announced their engagement in June, and Bure told PEOPLE that the wedding would be filled with laughter and tears."I'm sure we will have tissues out because there will be tears streaming down from crying and laughing so hard," she said of the speech that her former TV dad, and Coulier's longtime friend, Bob Saget, was expected to make at the reception.And Saget was another one of the first to share a glimpse of the big day … or, at least, one of the guests on the big day.Warning: NSFW-ish language ahead."Stamos walking away with wood at Dave's wedding," Saget captioned a photo of his costar, carrying a large wooden bench.We can't wait to hear what's in that toast.
– John Stamos asked girlfriend Caitlin McHugh to marry him less than two months ago, but it looks like they'll soon be calling each other mom and dad in addition to husband and wife. The 54-year-old Fuller House actor tells People he and the 31-year-old McHugh are expecting their first child, and his age may have played a role in expediting their household's expansion. It appears it was McHugh's suggestion that they have a kid before they tied the knot, and when Stamos asked her why, he says she teased: "Because you're old." "We have the same morals and the same values, that all clicked nicely," Stamos explains. "So we said, 'Oh, well, maybe we should have a family.'" Stamos says he's "always wanted to be a dad," but he figured "that ship has sailed." He's now eager to apply all the parenting "practicing" he did on TV. "I've done every schtick thing that you can do ... saying every song, bits and jokes and diaper gags. I'll probably just do all that." He also predicts the baby, whose gender will remain a secret until birth, "is gonna look like Don Rickles," per the Los Angeles Times. Stamos was previously married to actress Rebecca Romijn from 1998 to 2005. More on why he's now ready to be a dad in a People follow-up.