Last year saw Demi MooreÂ’s marriage to Ashton Kutcher, 15 years her junior, fall apart as the couple filed for divorce.

Another high profile couple with a rather large age gap was the rumoured relationship between Xtra Factor presenter and One Directions Harry Styles, which resulted in Flack receiving death threats.

So, can age-gap relationships work in the celebrity world? Here is a rundown of some of the most famous generation-gap couples in showbiz; see what you think...