Josh Brolin and Kathryn Boyd: 20 year gap
Actor Josh Brolin and his wife, model Kathryn Boyd, announced on Instagram they were expecting their first child together — a baby girl
. For more photos of Brolin, visit HollywoodLife.com
Katharine McPhee and David Foster: 34 year gap
Tommy Lee and Brittany Furlan: 24 year gap
Jason Momoa and Lisa Bonet: 12 year gap
Actor Jason Momoa is often spotted on the red carpet with his wife, actress Lisa Bonet of "The Cosby Show" fame. The 38-year-old "Aquaman" star and the 50-year-old sitcom starlet share two children.
Patrick Stewart and Sunny Ozell: 38 year gap
Patrick Stewart and his wife Sunny Ozell were spotted holding hands while making their way through LAX. The British actor is 77 and the American singer is 39. For more photos of the "Star Trek" icon, visit x17online.com
Brigitte Nielsen and Mattia Dessi: 15 year gap
Brigitte Nielsen was spotted walking hand-in-hand with husband Mattia Dessi to Joan's On Third in Los Angeles to grab a bite to eat. The actress is 53 and her beau is 38.
Anna Friel and Charlie Heaton: 17 year gap
Tony Bennett and Susan Crow: 40 year gap
Tony Bennett technically met his wife before she was even born. Bennett wrote in his memoir that he posed for a photo with his now-wife Susan Crow's parents at one of his shows in 1966. Turns out, Crow's mom was pregnant with her at the time. Little did they know, the Crow's unborn baby would end up marrying the singer.
Michael Douglas and Catherine Zeta-Jones: 25 year gap
All-star couple Michael Douglas and Catherine Zeta-Jones share the same birthday, so he's got exactly a quarter of a century on her.
Christopher Knight and Adrianne Curry: 25 year gap
Christopher Knight was hesitant to enter into a relationship with the significantly younger Adrienne Curry. It was a major plotline on "The Surreal Life." However, he eventually came around as we learned on "My Fair Brady." Maybe he should have listened to his gut -- the pair split in 2013.
Marilyn Manson and Evan Rachel Wood: 18 year gap
Marilyn Manson was known for his shocking antics. Evan Rachel Wood was not, which is why everyone was shocked when the two began dating. She has also been linked to Mickey Rourke.
Calista Flockhart and Harrison Ford: 22 year gap
This subdued Hollywood pair seem to be a perfect fit despite a large age gap.
Cameron Diaz and Justin Timberlake: 9 year gap
Despite their age difference, Cameron Diaz and Justin Timberlake shared a lot of interests and hobbies. Like surfing. And golf. Sadly, it wasnt enough to sustain them. Timberlake is married to actress Jessica Biel and Diaz is married to Benji Madden.
Megan Fox and Brian Austin Green: 13 year gap
The proud parents of three boys met on the set of "Hope & Faith" when Fox was 18 and Green was 30.
Anna Nicole Smith and J Howard Marshall: 63 year gap
The skeezy marriage between the late Anna Nicole Smith and J. Howard Marshall - she was 26, he was 89 - is a May-December story for the ages (but not for all ages).
Tom Cruise and Katie Holmes: 17 year gap
Maybe it was the age difference that caused their split?
Woody Allen and Soon-Yi Previn: 34 year gap
Woody Allen and Soon-Yi Previn. The marriage of Woody Allen, 73, and his once-upon-a-time-sorta-step-daughter Soon Yi Previn, 38, takes the prize of most disturbing May-December romance EVER.
Ashton Kutcher and Demi Moore: 16 year gap
Everyone was so shocked when Demi Moore and Ashton Kutcher hooked up that most assumed it was an elaborate stunt designed to "Punk" us all. Things didn't work out between the pair. Kutcher is now married to Mila Kunis.
Mariah Carey and Nick Cannon: 10 year gap
Mariah Carey shocked everyone with her out-of-nowhere marriage to Nick Cannon. They have since split.
Geena Davis and Dr. Reeza Jarrahy: 15 year gap
Everyone was shocked by the union of Ashton and Demi. However, few seemed to notice that the age difference between Geena Davis and her fourth husband Dr. Reeza Jarrahy.