Former Grease stars John Travolta and Olivia Newton ... That same summer, in PEOPLE’s Grease! 40th-anniversary special edition issue, Travolta and Newton-John discussed their enduring friendship.

Outfits worn by John Travolta and Dame Olivia Newton ... The 1978 film is known for its songs, including Dame Olivia and ...

“Grease,” with Olivia Newton John (center), began ... We get people from all over the world.” Newton-John sang her part of “Summer Nights” with the Pink Ladies amid a cluster of lunch ...