Celebrities Celebrate Mother's Day, From Justin Bieber To Kendall & Kylie Jenner — PHOTOS

Happy Mother's Day to all the moms out there! Have you called your mom to tell you that you love and appreciate her? Because celebrities are totally doing it — and they're also posting nostalgic photos of their awesome mommas on social media to mark the occasion. Celebrities showed off their soft spots for their mothers, posting photos and sweet messages to them on Twitter and Instagram. It only proves what we totally know to be true: Mom's definitely rule.

"This little 4-foot-9 woman may not look like a mom but she is, and she's the best at it!" Bieber captioned a photo of his momma posted on his Instagram account. "This woman taught me everything I know, how to love how to be compassionate how to be strong when the only thing you wanna be is weak how to stand when all you want to do is fall. If it wasn't for this woman lets just say I would have had a way LONGER stupid phase. I love you and thank you for not giving up on me!"

Biebs isn't the only one showing his mom some social media love today. Here's how your favorite celebs are commemorating Mother's Day this year.

Justin Bieber

See above.

Kris Jenner

Kylie and Kendall Jenner sent their mom flowers — and Kris absolutely adored the gift from her youngest daughters.

Kendall Jenner

Meanwhile, Kendall shared this hilarious Keeping Up With the Kardashians moment.

Reese Witherspoon

Celebrating her mom Betty — as well as the opening of her new movie Hot Pursuit, perhaps?

Hugh Jackman

He's literally on top of the world with his mom.

Sarah Silverman

Proof that the sharp-tongued comedian looks just like her mom, Beth Ann O'Hara.

James Franco

Ciara

The singer posted this sweet video of her and her baby to mark her first Mother's Day. Aww!

Nick Cannon

Tyra Banks

Banks shared a throwback pic and a sweet, pizza-filled memory to commemorate the day for her mother.

Eva Longoria

Fergie

With her mom and her son, Axl.

Uzo Aduba

Melissa Joan Hart

Hart posted this photo with her adorable kids.

Lena Dunham

Dunham's mom Laurie Simmons looks so Hannah Horvath in this photo. It's uncanny.

Zach Braff

Braff posted this vintage pic of him with his mom in his Spiderman underoos. Look at that expression.

Goldie Hawn

Hawn posted this photo of her mama, while her daughter Kate Hudson posted about Hawn (see below).

Kate Hudson

Aww, what a sweet message.

Remember when actor J.K. Simmons won an Oscar a few months ago? Today, we should all do what he said in his speech.

Image: Giphy