• Brian Austin Green thanked his ex-girlfriends on Instagram
  • Justin Bieber admits he hadn’t "been empathetic toward women"
  • Sam Asghari calls Britney Spears "lioness"

On International Women's Day, many celebrities took to social media to commemorate the socio-economic and cultural achievements of women. Celebrities such as Brian Austin Green, Chris Hemsworth, Justin Bieber, Sam Asghari, Justin Timberlake also paid tribute to the strong women in their lives.

Hemsworth shared pictures of his daughter, India Rose, and wife, Elsa Pataky, to celebrate the day.

"Celebrating women all across the globe. Here’s my wife and daughter being extra awesome," he wrote in the caption with the #internationalwomensday hashtag.

In the pictures, the mother of three can be seen riding a black horse and the 8-year-old daughter jumps over a small fence while riding her light brown horse.

Timberlake took to Instagram to thank his mother, Lynn Bomar Harless, and his wife, Jessica Biel, for being "badass women" that his sons, Silas Randall, 5, and Phineas, 1, can look up to.

"These women right here... we are not worthy," he wrote along with the picture of him, his wife, and his mother posing together. "Celebrating your strength, your love, your patience, your support, and your wisdom. Thankful that my sons have such badass women to look up to #IWD2021."

Meanwhile, Asghari took to his Instagram story to wish everyone a happy International Women's Day before praising his mother and three sisters.

"Happy international women's day! I was lucky enough to be raised by powerful and strong women! 3 sisters and a mother," he wrote in the first Instagram Story. He went on to share a collage on the story of his childhood pictures, posing with three sisters, and some happy moments with Britney Spears.

"Thank you for empowering me to live my life with purpose. You are the reason why I get up in the morning," he wrote. In the last Instagram Story, he addressed Spears as "My Lioness" and thanked her for showing him "that true strength and bravery comes from a woman."

"Plus we look like two badasses here," he added.

Green also took his Instagram stories to share a series of pictures wishing happy International Women's Day. The actor added a photo with his girlfriend, Sharna Burgess, and also shared pictures of his exes including Megan Fox, Vanessa Marcil and Tiffani Theissen.

Justin Bieber shared a heartfelt message on Instagram and admitted that he was "naive" in the past.

"I know I have been naive and haven’t been empathetic toward women in the past and have overlooked their struggles," he wrote. "I am learning every day beside my wife as I see all of the struggles she faces that I will never have to face."

More celebrities wished special ladies in their lives:

Singer Lenny Kravitz also took to Instagram to say how proud he was of his daughter Zoe: "I have watched you grow into a strong, independent, fierce and beautiful force that is completely your own."

Chris Hemsworth Chris Hemsworth and Elsa Pataky in the Royal Box on Centre Court before the Gentlemen's Singles Final match between Roger Federer of Switzerland and Novak Djokovic of Serbia on day thirteen of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club in London, July 6, 2014. Photo: Getty Images/ Matthew Stockman