John Stamos celebrates 63rd birthday with shirtless shower selfie

Have mercy, Uncle Jesse!

John Stamos bared (nearly) all in a black-and-white mirror selfie he shared on Instagram Wednesday as he celebrated turning 63.

The “Full House” star gave fans an eyeful in the shirtless snap, seemingly wearing nothing below the waist and captioning it simply, “63.”

Stamos appeared to have just gotten out of the shower, his wet hair slicked back as he posed in front of the bathroom mirror.

The actor’s famous friends were quick to fill the comments with birthday wishes — and plenty of reactions to the cheeky photo.

Kelly Rizzo, the wife of the late Bob Saget, was notably among those to weigh in, writing, “All I can think about is, ‘What would Bob say?’ right now 🥹🥹😂😂. Happy birthday, brother John. I love you! 🎂🎂🎂🎂🎂🎂🎂🎂🎂”

Rita Wilson also chimed in, jokingly writing, “63???? You have the numbers flipped. 36!!”

One fan confessed, “I shouldn’t be referring to you as UNCLE Jesse any longer with the thoughts going on in my head 😂.”

Stamos is no stranger to turning heads on social media, having previously made headlines for similarly racy photos.

In October 2025, he took to Instagram to wish his “Scream Queens” Season 2 co-star Glen Powell a happy birthday, sharing a carousel featuring several shirtless photos of the duo.

“Happy birthday, @glenpowell, the man who’s seen me naked more times than I’d like to admit,” Stamos wrote in the caption. “Love you, buddy! Steam room date soon? xo JS.”

Among the photos were two of Stamos and Powell together in a steam room, with the pair covered by towels in one and wearing only black shorts in another.

In the post’s cover photo, Powell and Stamos appeared to be without clothes, with Powell shielding himself with a skateboard and Stamos using shopping bags for coverage.

The “Fuller House” alum rang in his 60th birthday with another playful shower photo in August 2023.

Stamos could be seen rinsing off shirtless in an outdoor shower, with his lower half cropped out of the frame.

“The other side of 60,” Stamos captioned the post.