Happy 51st Birthday, Lori Loughlin!

On Tuesday, July 28, the actress' onscreen husband John Stamos took to his Instagram page to post a cute photo of the birthday girl celebrating her big day with her Fuller House costars!

"51 Flowers for our favorite fun girl. #HappyBirthdayBecky," John, 51, captioned a pic of himself posing with Lori, Bob Saget, 59, and Dave Coulier, 55.

Click through the gallery below to see the rest of the Full House cast then and now!