It's a Grease reunion!
Olivia Newton-John was joined by her former costar Didi Conn during her resident show in Las Vegas on Saturday, Jan. 3 — and the two gave the audience a very special performance of 'Summer Nights'!
The duo — who played best friends Sandy and Frenchy in the 1978 musical, respectively — sang the hit song in front of a live audience at the Flamingo hotel. For the surprise performance Olivia, 66, donned a black leather jacket while Didi, 63, wore her character's signature 'Pink Ladies' satin jacket.
Olivia (left) with Didi (right) on Saturday, Jan 3. (Photo Credit: Getty)
In the classic flick, Frenchy often gives Sandy advice about her on-again, off-again relationship with Danny Zuko, portrayed by John Travolta.
In November, John, 60, revealed he and Olivia remain good friends thirty-six years after they played love interests in 'Grease.'
Olivia as Sandy (left) and Didi as Frenchy (right) in 'Grease.' (Photo Credit: R/R)
"We see each other about twice a year, talk about three times a year and we text every two weeks," he said in an interview.
"I love Olivia, we shared a mega success together, 'Grease' is the biggest movie musical in history and it doesn't go away," he added.