Blake Lively's special day had a little '80s flashback, thanks to her big sis Robyn.
The details from the actress' super-secret wedding to Ryan Reynolds over a year ago are still coming out to this day, and the latest little tidbit that was revealed from their ceremony held at Boone Hill Plantation in Mount Pleasant, S.C., was a doozy!
Apparently, Lively's older sister Robyn decided to relive her role in the 1989 teen comedy-fantasy Teen Witch and performed the choreographed dance from the end of the flick at the event.
"My younger sister and younger brother [Eric Lively] are huge Teen Witch fans," Robyn recently said on the Pop My Culture podcast. "So for my younger sister's wedding, my younger brother and I got together and figured out how to do that last scene, the 'Finest Hour' dance."
And Lively, who "surprised" the newlyweds with the performance, made sure to get everything right.
"I got a blue dress, a blue tutu and the music comes on. I had the necklace remade. I took it off and threw it to her. We did the whole dance! Everyone else that was there was coming up to me talking about Teen Witch being their favorite."
Check out the original scene from the flick below!