The couple is expecting their first child together.
Caitlin McHugh is already showing!
John Stamos and his pregnant fiancee were spotted out on a walk with their dogs at TreePeople Park in Studio City, California, on Thursday, with McHugh's burgeoning baby bump on display.
The expecting mother was all smiles dressed in bluish-gray sweatpants with a pink sweatshirt, baseball cap and tennis shoes. Meanwhile, the 54-year-old Full House star wore camouflage shorts, a light blue button-up shirt and a navy baseball hat.
The lovebirds, who got engaged at Disneyland in October, announced they are expecting their first child together earlier this month.
And it seems as if Stamos can't wait to be a father, paying tribute to his late dad and joking about how he always wanted a baby on Instagram. Meanwhile, the couple is already feeling like a family and spent Christmas together with their loved ones.
On Thursday, Stamos shared a silly pic of him with his family in matching red plaid pajamas.
ET caught up with Stamos shortly after his engagement, where he gushed about his "perfect" bride-to-be.
"I’m on cloud nine. I’ve been waiting for the perfect girl for over a decade and she walked into my life," Stamos said, beaming.
Hear more of their fairy-tale romance in the video below.
John Stamos Says It'd Be ‘a Tragedy' If He Didn't Have Kids With ‘Perfect’ Fiancée Caitlin McHugh (Exclusive)