John Stamos announces engagement to girlfriend Caitlin McHugh: 'She said yes!'

Wedding bells are ringing for John Stamos!

The Fuller House star took to Instagram on Sunday to announce his engagement to girlfriend Caitlin McHugh.

The sitcom icon posted an illustration of him and his lady love standing in front of Disneyland's Sleeping Beauty Castle, as fireworks burst in the air.

"I asked...she said yes! ...And we lived happily ever after," Stamos captioned the pic, along with an engagement ring emoji.

I asked...she said yes! ...And we lived happily ever after💍

A post shared by John Stamos (@johnstamos) on

WATCH: John Stamos Celebrates Girlfriend Caitlin McHugh's Birthday With 'Fuller House' Co-Stars at Disneyland

He also geotagged the image from Disneyland, where the cute couple frequently spend time and snap adorable photos.

Stamos -- who was previously married to actress Rebecca Romijn from 1998-2005 -- began dating McHugh in early 2016, and they made their first public appearance together in July 2016, when they stepped out for a fun night at the 20th Century Fox party at San Diego Comic-Con.

See photos of John Stamos and Caitlin McHugh:

9 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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WATCH: John Stamos' Girlfriend Caitlin McHugh on His 'Priceless' Support, Opens Up About Their Romance

ET caught up with Stamos in March at the Kids' Choice Awards, and the smitten star revealed that the Fuller House cast actually prefers his ladylove to him.

"They all love her more than me. They're like, 'Is Caitlin coming?'" he joked to ET. "'We don't care about you, is Caitlin coming?'"

Congrats to the happy couple!

19 PHOTOS
John Stamos out and about
See Gallery
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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