On the day that his wife Kelly Preston would have turned 60, John Travolta pays tribute to her.

John has had an especially difficult month as he has mourned the passing of his co-star Olivia Newton John.

John posted a lovely flashback photo of the two at what appears to be a movie premiere or party on Instagram to wish Kelly a very happy birthday.

In the picture, they are securely clutched together. The actor is dressed in a black suit with leather lapels, and his wife is wearing a very stylish outfit.

Kelly can be seen beaming broadly while donning a black dress with white piping and cut-outs at the waist, pearl drop earrings, and voluminous beehive-styled blonde hair.