Paris Hilton believes her late great-grandfather Conrad Hilton and Zsa Zsa Gabor were a ''beautiful couple''.

The 35-year-old DJ has taken to social media to pay tribute to the late actress, who passed away at the age of 99 over the weekend after suffering a heart attack, and the former 'Simple Life' star believes Zsa Zsa and Conrad - who were married from 1942 to 1946 - were perfectly suited to one another.

The blonde beauty shared a picture of the 99-year-old with the Hilton hotel founder - who passed away in 1979 - on her Twitter and Instagram accounts.

Alongside the image, she wrote: ''Sad to hear the news of Zsa Zsa Gabor's passing. My great grandfather and her made such a beautiful couple. May she rest in peace. (sic)''

It has been reported the 'Moulin Rouge' star - who outlived her only daughter Francesca Gabor Hilton, who sadly passed away in January 2015 at the age of 67 after suffering a huge stroke - died in ''30 seconds'' but was ''without pain'' according to her ninth husband Prince Frederic von Anhalt.

Speaking previously, he said: ''It just took 30 seconds and the doctor came out and said, 'Look, there's nothing we can do any more. She passed away.

''There was no pain. She didn't scream or complain about anything. There is no pain pill in the house. She never had any pain over the years, it was just her blood pressure.

''The way I see it, when I felt her hand and it was cold already, she was slowly slipping away peacefully without pain and it was just the time for her to go. She wanted to go.''