The 1978 Grease stars, John Travolta and Olivia Newton have reunited to make an album for Christmas. Travolta got the idea of collaboration after receiving an sms from Olivia in which she noted that “You’re the One That I Want,” had become the best selling duet in the history of pop music. Olivia said “John and I have always connected. That’s never gone away. When we’re together, we have a good laugh and feel bonded to one another.