Kelly Preston, actress and wife of John Travolta, has died aged 57.

Travolta posted on Instagram to say Preston had lost her two-year battle with breast cancer.

Alongside a photograph of her, he wrote: "It is with a very heavy heart that I inform you that my beautiful wife Kelly has lost her two-year battle with breast cancer. She fought a courageous fight with the love and support of so many.

"My family and I will forever be grateful to her doctors and nurses at MD Anderson Cancer Centre, all the medical centres that have helped, as well as her many friends and loved ones who have been by her side.

"Kelly's love and life will always be remembered. I will be taking some time to be there for my children who have lost their mother, so forgive me in advance if you don't hear from us for a while. But please know that I will feel your outpouring of love in the weeks and months ahead as we heal. All my love, JT".

Preston starred in films such as SpaceCamp (1986), Twins (1988), Jerry Maguire (1996) and For Love of the Game (1999). Her final film role was in the 2018 film Gotti in which she played Victoria Gotti, the wife of Mafia boss John Gotti, who was portrayed on screen by Travolta.

Preston is survived by her husband of 20 years and their children: daughter Ella, 20, and 9-year-old son Benjamin. Their son Jett died at age 16 in January 2009.