Have mercy!

John Stamos took to Instagram on Sunday, Feb. 21 to share an adorable throwback video of himself with his former Full House costars Mary-Kate Olsen and Ashley Olsen — and it is so cute to see the Tanner girls cuddling up to Uncle Jesse in the behind-the-scenes clip!

"#StamosHomeMovies," the 52-year-old actor captioned the video of the adorable twins — who were just three-years-old at the time! — giving him a hug on location in Hawaii back in August 1989.

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Mary-Kate and Ashley, now 29, both starred as Michelle Tanner in Full House from 1987 until 1995. Sadly, the fashion designers will not appear in the sitcom's revival, Fuller House, which is scheduled to premiere on Netlfix this Friday, Feb. 26.

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