By Molly Jacob

They say love knows no age, and celebs seem to agree. The hottest and most famous couples out there have surprisingly large age gaps.

See what celebrity couples Cupid has selected with the biggest age differences!

1. Harrison Ford and Calista Flockhart:

With an age gap of 23 years, Harrison Ford (73) and Calista Flockhart (50) have one of the biggest age differences in Hollywood. The famous couple wed in 2010 and have a teenaged son named Liam.

2. Sam Taylor-Johnson and Aaron Taylor-Johnson:

British actor Aaron Taylor-Johnson and director Sam Taylor-Johnson married in 2012 and have a 23-year age gap. They started dating when Aaron was only 19 and Sam was 42, but according to an interview with The Times magazine, he’s an “old soul” and she’s a “young soul.”

3. Olivier Sarkozy and Mary-Kate Olsen:

Mary Kate Olsen, 29, and fiancé Olivier Sarkozy, 46, met in 2012. The former Full House star and the half-brother of a French president have a 17-year age difference.

Related Link: Mary-Kate Olsen Is Engaged to Olivier Sarkozy

4. Billy Joel and Alexis Roderick:

The 66-year-old “Piano Man” musician wed his pregnant 33-year-old girlfriend, Alexis Roderick, this past July 4th. This famous couple has been dating since 2009, and this is Joel’s fourth marriage!

5. Bennett Miller and Ashley Olsen:

The other half of the famous Olsen pair is also dating a man much older than her, Moneyball director Bennett Miller. He is 48 and Ashley is 29.

6. Michael Douglas and Catherine Zeta-Jones:

70-year-old Michael Douglas and 45-year-old Catherine Zeta Jones have been married since 2000 and have two children. This celebrity couple had a brief split in August 2013 but they are back together and stronger than ever.

Related Link: Michael Douglas Welcomes Catherine Zeta-Jones Home from Treatment

7. Hugh Hefner and Crystal Harris:

There’s no way that Playboy founder Hefner WOULDN’T make it on this list! The 89-year-old celeb has always had a slew of young girlfriends and wives. He married model Crystal Harris in 2012 and bought a multi-million dollar estate for the two of them in Hollywood Hills.

What other celebrity couples have huge age gaps? Let us know in the comments section below!