Some of these A-listers were married before they could legally drink.

Marriage is beautiful, but also a big responsibility.

It can also be more challenging when you make that commitment, depending on how young you are.

Olivia Wilde in a white sleeveless top and black pants with a wide belt, standing beside a table in an indoor setting

1.ActressOlivia Wildegot married at the tender age of 19.

“I really had a sense that I had stunted my growth.

“It was really no fault of my husband.

Reese Witherspoon poses on the red carpet in a black sleeveless gown with a v-neckline, thigh-high slit, and black heels at the AFI event

It was me realizing that I had sort of arrested development.

2.Reese WitherspoonandRyan Phillippemarried each other when they were in their 20s.

Especially since her and Phillippe’s union resulted in their two beautiful children, Ava and Deacon.

Sonny Bono and Cher in satin outfits, Sonny with a bowl cut hairstyle, and Cher with long, straight hair and bangs, both smiling while standing indoors

“Its about that next chapter in your life.

I got married when I was 23 and had two kids by 27…

Sometimes its good to know yourself,“Witherspoon told Hello!in 2017.

Aaron Taylor-Johnson and Sam Taylor-Johnson pose on the red carpet. Sam wears a black dress, Aaron wears a black leather jacket and pants, and both look into the camera

“I would never change anything!”

3.Cher got hitched at 18 to Sonny Bono.

The global icon remained close to Bono until he died in 1998.

Millie Bobby Brown and Jake Bongiovi stand together at a Netflix event for "Damsel." Millie wears a sequined gown with a thigh-high slit, while Jake wears a black suit

Bono’s tight reign on the songstress contributed to the couple’s divorce.

“He didn’t want me to grow up or have any freedom,” Chertold Paradein 2010.

“I wasn’t allowed to do anything except work.

Man giving a speech at the Hollywood Walk of Fame podium

We worked more than we lived.”

4.Aaron Taylor-Johnson married his wife, director Sam Taylor-Johnson, at 22.

5.Stranger Thingsstar Millie Bobby Brown got married at just 20.

Ben Sinclair and Kate Hudson at the "Poker Face" premiere. Ben wears a patterned jacket with black pants, and Kate is in a sleek black velvet dress

6.Macaulay Culkin marriedGuiding Lightactress Rachel Miner when he was 18.

7.Kate Hudson got married to Black Crowes frontman Chris Robinson at 21.

8.Solange Knowles married her high school sweetheart, Daniel Smith, at 17.

Solange Knowles in a semi-sheer dress with lace bodice and sequin detailing

Drew Barrymore on "The Tonight Show Starring Jimmy Fallon," wearing a black blazer with a sheer, sparkling skirt. She is smiling at the camera

LeAnn Rimes performs on stage, smiling and wearing a sparkly, sheer, black dress. She has long, wavy hair and is holding her arms wide open