Age difference: 15 years Ellen and Portia started dating in 2004 and were married in 2008.
Age difference: 11 years "Age ain't nothing but a number," Nick once said, when questioned by Oprah about the 11-year difference between him and Mariah. "I've always felt age shouldn't be a chronological issue," Joan once said.
"I know that I look and act a lot younger than I am."Age difference: 12 years Susan and Tim were regarded as one of Hollywood's most enduring couples - having been together 23 years - when they split in 2009.
They were admired for their long relationship in the face of the pressures of show business.
A new study has found that three quarters of men in Britain fantasise about dating an older woman, while 70 percent of women aged over 35 say they fancy younger men.
In the face of such overwhelming stats, we decided to have a look at famous relationships - both past and present - where older women have dated younger men.
Read on for a history of Hollywood's most famous age-gap couples...
Simply click on an image to launch the gallery Age difference: 15 years For several years, these two were held as an example of how major age gaps can work in Hollywood.
Age difference: 9 years The movie star and model separated in April 2010, after nearly five years and a daughter together.
"She is, and will forever be one of the most special and beautiful people that I have ever known, and I am certain that we will continue to have only love and respect for one another," Gabriel said at the time.