Its only been 3 and a half decades, but they are back together. Grease stars John Travolta and Olivia Newton-John are going to make a Christmas album, and they plan to include 13 guest stars.

The idea came from Travolta after he received a text from Newton-John noting that their 1978 hit, You're the One That I Want, had become the best-selling duet in pop music history. How about Grease 3?