John Stamos expecting his first child with fiancée Caitlin McHugh: 'I'll be a fun dad'

John Stamos is headed for fatherhood!

The 54-year-old "Fuller House" actor revealed to People's Editor-in-Chief Jess Cagle that he and fiancée Caitlin McHugh are expecting their first child together, and the beloved star couldn't be more excited about the news.

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"The look on John's face when I told him we were pregnant was priceless," McHugh told People. "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!"

The couple said that they had "talked about" having a baby and that McHugh had suggested to Stamos they have a kid before they get married. When the former "Full House" star asked his then-girlfriend why, she said, "Because you're old."

Once McHugh revealed to Stamos that she was expecting, the actor sprung into action.

See photos of John Stamos and Caitlin McHugh:

8 PHOTOS
John Stamos and Catilin McHugh together
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John Stamos and Catilin McHugh together
SAN DIEGO, CA - JULY 22: Caitlin McHugh and John Stamos attend the Comic-Con International 2016 - 20th Century Fox Party at Andaz Hotel on July 22, 2016 in San Diego, California. (Photo by Todd Williamson/Getty Images)
SAN DIEGO, CA - JULY 22: Caitlin McHugh, John Stamos, Darren Criss and Mia Swier attend the Comic-Con International 2016 - 20th Century Fox Party at Andaz Hotel on July 22, 2016 in San Diego, California. (Photo by Todd Williamson/Getty Images)
DANA POINT, CA - NOVEMBER 05: (L-R) Bob Rehling, Janeen Stamos Rehling, Alaina Stamos Talarico, John Stamos, Caitlin McHugh and Frank Talarico attend the Goodwill of Orange County Gala at Ritz-Carlton Laguna Nigel on November 5, 2016 in Dana Point, California. (Photo by Tara Ziemba/Getty Images)
BEVERLY HILLS, CA - NOVEMBER 14: Actors Caitlin McHugh (L) and John Stamos attend Saban Community Clinic's 40th Annual Dinner Gala at The Beverly Hilton Hotel on November 14, 2016 in Beverly Hills, California. (Photo by Rodin Eckenroth/Getty Images)
BEVERLY HILLS, CA - NOVEMBER 14: Netflix Chief Content Officer Ted Sarandos, Actress Caitlin McHugh and Actor John Stamos arrive for the Saban Community Clinic's 40th Annual Dinner Gala at The Beverly Hilton Hotel on November 14, 2016 in Beverly Hills, California. (Photo by Greg Doherty/Getty Images)
LOS ANGELES, CA - DECEMBER 07: John Stamos is seen with his girlfriend Caitlin McHugh on December 07, 2016 in Los Angeles, California. (Photo by BG002/Bauer-Griffin/GC Images)
LOS ANGELES, CA - MARCH 11: Actor John Stamos (L) and Caitlin McHugh at Nickelodeon's 2017 Kids' Choice Awards at USC Galen Center on March 11, 2017 in Los Angeles, California. (Photo by Chris Polk/KCA2017/Getty Images for Nickelodeon)
LOS ANGELES, CA - MARCH 11: Actors John Stamos (R) and Caitlin McHugh arrive at the Nickelodeon's 2017 Kids' Choice Awards at USC Galen Center on March 11, 2017 in Los Angeles, California. (Photo by Jeffrey Mayer/WireImage)
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"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," he explained. "So I called her parents to ask, and it was like, 'You better!'"

Stamos popped the question in as part of an elaborate engagement at Disneyland on October 22 after a little less than two years of dating. 

"We have the same morals and the same values, that all clicked nicely," Stamos said of his relationship.

As for the prospect of being a father, it's something that Stamos has "always wanted."

"People would say, 'You should have a child,'" he recalled. "I was like, 'That ship has sailed.'"

But, now that his dreams have become his reality, he couldn't be more excited and joked that he's had more than enough experience with children. Between his time on "Full House" and its reboot "Fuller House," "Grandfathered" and "Glee," he's been involved in many projects with children and young adults.

"I'll be a fun dad," he said with a smile. "I've been practicing for a long time. 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."

And now that he has one on the way, does he see his family expanding even further?

"I think so," he finished. "Caitlin wants to have other kids, too."

See more photos of John Stamos:

18 PHOTOS
John Stamos out and about
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John Stamos out and about
HOLLYWOOD, CA - FEBRUARY 22: John Stamos arrives at the 87th Annual Academy Awards at Hollywood & Highland Center on February 22, 2015 in Hollywood, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - NOVEMBER 22: Actor John Stamos poses in the press room at the 2005 American Music Awards held at the Shrine Auditorium on November 22, 2005 in Los Angeles, California. (Photo by Vince Bucci/Getty Images)
UNIVERSAL CITY, CA - JANUARY 23: Actor John Stamos of the television show 'Jake in Progress' listens to a question during the ABC 2005 Television Critics Winter Press Tour at the Hilton Universal Hotel on January 23, 2005 in Universal City, California. (Photo by Frederick M. Brown/Getty Images)
BEVERLY HILLS, CA - MARCH 31: Actor John Stamos, arrives at 'A Stellar Night' Gala Honoring actress Dakota Fanning by the Starlight Starbright Children's Foundation held at the Beverly Hilton Hotel, on March 31, 2006 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)
NEW YORK - APRIL 18: Actor John Stamos arrives at the A&E Network's 'Up-Fronts' event to unvail its Fall 2006 season line-up at the Time Warner Center's Fredrick P.Rose Hall April 18, 2006 in New York City. (Photo by Clarence Elie-Rivera/Getty Images)
BEVERLY HILLS, CA - JANUARY 15: Actor John Stamos arrives at the NBC/Universal Golden Globe After Party held at the Beverly Hilton on January 15, 2007 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)
NEW YORK - FEBRUARY 13: (EXCLUSIVE ACCESS) Actor John Stamos meets with television personality Rachael Ray on the 'Rachael Ray' show on February 13, 2007 in New York City. (Photo by Bryan Bedder/Getty Images)
BURBANK, CA - AUGUST 03: Actor John Stamos arrives to 'Comedy Central Roast Of Bob Saget' at the Warners Brothers Studio Lot on August 3, 2008 in Burbank, California. (Photo by Alberto E. Rodriguez/Getty Images for Comedy Central)
404347 27: Actor John Stamos arrives at the Roundabout Theater Company's 2002 Spring Gala April 22, 2002 in New York City. Plummer received the inaugural Jason Robards Award for contributions to the theater. (Photo by Lawrence Lucier/Getty Images)
NEW YORK - OCTOBER 7: Actor John Stamos joins the cast of 'Nine' with Eartha Kitt at the Eugene O'Neill Theatre October 7, 2003 in New York City. (Photo by Scott Gries/Getty Images)
UNIVERSAL CITY, CA - JANUARY 23: Actor John Stamos arrives at the ABC's Winter Press Tour Party on Wisteria Lane on January 23, 2004 in Universal City, California. (Photo by Vince Bucci/Getty Images)
CULVER CITY, CA - OCTOBER 27: ActorJohn Stamos front row at the Shakti Spring 2005 show at the Mercedes-Benz Fashion Week at Smashbox Studios October 27, 2004 Culver City, California. (Photo by Carlo Allegri/Getty Images)
377853 18: Actress Rebecca Romijn-Stamos kisses her husband John Stamos as they arrive at the 2000 Emmy Awards September 10, 2000 in Los Angeles, CA. (Photo by David McNew/Newsmakers)
HOLLYWOOD, CA - OCTOBER 11: Actor John Stamos attends the Los Angeles Premiere of 'Team America: World Police' at the Grauman's Chinese Theater October 11, 2004 in Hollywood, California. (Photo by Kevin Winter/Getty Images)
FULL HOUSE - Cast Gallery - July 1, 1987. (Photo by ABC Photo Archives/ABC via Getty Images)JODIE SWEETIN;BOB SAGET;JOHN STAMOS;DAVE COULIER;CANDACE CAMERON
File Photo of actor John Stamos taken in Los Angeles, Calif. on 7/27/84. (Photo by Bob Riha Jr/WireImage)
FULL HOUSE - Cast Gallery - June 26, 1987. (Photo by ABC Photo Archives/ABC via Getty Images)JOHN STAMOS
FULL HOUSE - 'Knock Yourself Out' - Airdate: October 30, 1987. (Photo by ABC Photo Archives/ABC via Getty Images)JOHN STAMOS
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