We forgot how handsome Uncle Jesse and Uncle Joey were back in the day!

John Stamos wished his Full House costar Dave Coulier a happy 57th birthday on Wednesday, Sept. 21 with an awesome throwback photo — and we're loving all this nostalgia!

"Happy Birthday, Dave. Remember the days when we'd let just anyone cut our hair? Love you!" the 53-year-old actor captioned the epic snapshot of the two.

MORE: Dave Coulier Opens Up About His Showbiz Comeback — See What He Revealed!

John and Dave have remained close friends since first starring as Jesse Katsopolis and Joey Gladstone, respectively, on Full House from 1987 until 1995. Now, the two are back onscreen together reprising their beloved roles on the sitcom's spin-off, Fuller House.

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