Macaulay Culkin and Rachel Miner
Age: Both 18
The child stars, who originally met at school got married when they were 18, just months after they began dating.
"We're so happy and proud that we found each other at such a young age. We look forward to spending our lives together," they explained in a statement in 1998.
After two years of marriage, the pair announced they were separating, with a spokesman of Macaulay confirming the news to Entertainment Tonight, saying, "It is very amicable and they remain best of friends."
Kate Hudson and Chris Robinson
Age: Kate was 21, Chris was 34
Kate Hudson married Black Crowes frontman, Chris Robinson when she was 21. The pair were married for seven years and share a son, Ryder together.
"It wasn't even impulsive," Kate explained in an interview with Today. "People thought it was impulsive but I was just like 'You know what, I'm going to dive right into this. I'm not going to second-guess it. I'm in love with him. I'm not going to pretend like, oh, we should wait...I'm madly in love, and I want to marry him.'"
Drew Barrymore and Jeremy Thomas
Age: Drew was 19 and Jeremy was 31
Drew Barrymore and Jeremy Thomas married after dating for just six weeks in 1994. However, they split just 19 days after tying the knot and their divorce was finalized in 1995.
Melanie Griffith and Don Johnson
Age: Melanie was 18 and Don was 26
The pair tied the knot in 1976 before divorcing six months later. However, they reunited and remarried in 1989, welcoming their daughter, Dakota Johnson later that year. The couple were in an on-again-off-again relationship before finally splitting in 1995.
Olivia Wilde and Tao Ruspoli
Age: Olivia was 19, Tao was 28
Olivia married Tao, a filmmaker and Italian prince in a secret ceremony on a school bus in 2003. The pair were together for eight years, before they separated in 2011.
Uma Thurman and Gary Oldman
Age: Uma was 20, Gary was 32
The pair got married in 1990 after meeting on the set of State of Grace, before divorcing two years later.
Cher and Sonny Bono
Age: Cher was 19 and Bono was 29
The pop duo got married in 1964 and share one child together, Chaz. After 13 years together and six years of marriage, the pair legally divorced in 1975.
Millie Bobby Brown and Jake Bongiovi
Age: Millie is 19 and Jake is 20
In April 2023, Millie announced her engagement to Jake, the son of Jon Bon Jovi, posting a sweet picture of the loved-up couple on Instagram.
"I've loved you three summers now, honey, I want 'em all," she captioned the post.