Olivia Newton-John has paid tribute to the late wife of her former Grease co-star John Travolta, Kelly Preston.Kelly died at age 57 following a two-year-long battle with breast cancer Sunday morning, and Olivia, 71, remembered the actress' 'gentle spirit' in a heartfelt message posted to Instagram on Monday.'@therealkellypreston was a radiant, warm and gentle spirit - a loving, devoted wife, mother and sweet friend.
My heart breaks for John, Ella and Ben. No words can express my sorrow for her family. Kelly's light shines on in her beautiful children.
Xox,' Olivia wrote on Instagram, along with a photo of the pair. 'My heart breaks for John': Olivia Newton-John has paid tribute to the late wife of her former Grease co-star John Travolta,.
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