But the good news is, this is 100% real, and according to Olivia, this is the FIRST time they've been back in costume since they filmed the movie — 41 years ago!!!
And people are freaking the frick out.
Even Sara Blakely, the creator of Spanx, is excited!
It turns out the reunion is for an event called "Meet 'N Grease" happening this weekend in Florida, where there'll be a sing-a-long viewing of the movie and a super special Q+A with Olivia and John.
So for reference, here's Danny and Sandy in 1978:
And here's Danny and Sandy still looking pretty darn good in 2019: