Olivia Newton-John and Didi Conn had a mini Grease reunion when Conn joined Newton-John on stage in Las Vegas for a performance.

Us Magazine reported that the two women performed the song “Summer NightS” from the hit 1978 movie they starred in together. Conn played Frenchy while Newton-John played the leading lady Sandy.

The performance occurred at Las Vegas’ Flamingo Hotel & Casino. Conn even donned a pink jacket reminiscent of the Pink Ladies in the movie. Sandy, meanwhile, put on a black leather jacket, much like her character does at the end of the movie.

In the movie, the other Pink Ladies included Jan (Jamie Donnelly), Marty Maraschino (Dinah Manoff), and Betty Rizzo (Stockard Channing).

E! News reported the sing along occurred during Newton-John’s Summer Nights show, where she sings hit songs from the film, including “Hopelessly Devoted To You.”

Newton-John also reunited with John Travolta, who played Danny and her love interest in the film, for a holiday album back in 2012 titled This Christmas.

Image courtesy of INFphoto.com