Michelle Obama, Lady Gaga, Ellen DeGeneres and Others Mark International Women's Day

 International Women's Day
International Women's Day in London on March 8, 2020 TOLGA AKMEN/AFP

Michelle Obama, Lady Gaga and Hillary Clinton were among some of the notable figures who acknowledged International Women's Day on social media.

International Women's Day is celebrated each year on March 8, a tradition that is over 100 years old. The date has become an occasion to honor the achievements of women around the world while also pushing forward to fight against inequality and poor representation.

On Sunday, celebrities worldwide took to social media to commemorate International Women's Day. Some elected to speak on the issues in their respective industries, while others celebrated the women that inspire them.

One reaction comes from singer Shakira, who complimented Michelle Obama and activist Malala Yousafzai, two women who became examples for girls around the world. Shakira stressed the importance of fighting against child marriage and education for women worldwide.

Two women I admire are @MichelleObama and @Malala, thank you for standing up and setting examples for women around the world. Girls, everywhere, are combatting child marriage, stereotypes, education inequality, and violence - and they won’t stop. (1/3) #InternationalWomensDay

— Shakira (@shakira) March 8, 2020

In her tweet, former first lady Obama wrote: This #InternationalWomensDay, let's work together to empower the next generation of women.

This #InternationalWomensDay, let’s work together to empower the next generation of women.

That’s the idea behind the @GirlsAlliance—and I’m thrilled @YouTube is sharing the stories of our work in a new Creators For Change special. Tune in on March 17: https://t.co/r6CEE98VRz pic.twitter.com/yJz9G9PCnm

— Michelle Obama (@MichelleObama) March 8, 2020

Comedian Ellen DeGeneres shared a Twitter post celebrating multiple women who came on as a guest on her TV talk show. Greta Thunberg, Elizabeth Warren, Margot Robbie, Demi Lovato, and Charlize Theron all joined DeGeneres' program, showcasing her work in giving women a platform to speak on larger issues.

Happy #InternationalWomensDay. I see you all. You look fantastic. pic.twitter.com/q86vrAUgBz

— Ellen DeGeneres (@TheEllenShow) March 8, 2020

Former Secretary of State Hilary Clinton commented on International Women's Day with a call for the advancement in women's rights. She emphasized that no political party or administration can change that "women's rights are human rights."

On #InternationalWomensDay and every day, let’s say out loud once more that women’s rights are human rights—and no administration, political party, court, legislature, or biased attitudes can change that. pic.twitter.com/Zoc437YsHS

— Hillary Clinton (@HillaryClinton) March 8, 2020

California Senator Kamala Harris recalled what her mother used to say: "You may be the first to do many things, but make sure you are not the last." Harris further commented on the sacrifices women made throughout history who fought for the rights of women to have "equality and representation."

As my mother always used to say, “you may be the first to do many things, but make sure you are not the last.”

On #InternationalWomensDay, let’s recognize the sacrifices of all the extraordinary women who came before us and continue their fight for equality and representation.

— Kamala Harris (@KamalaHarris) March 8, 2020

Lady Gaga celebrated women in music on International Women's Day. The singer-songwriter shared a playlist of songs from female artists from around the world. The playlist, filled with 31 different tracks, is available on Apple Music to listen.

It’s #InternationalWomensDay and I’m celebrating all of the strong, women of choice all over the world with this playlist full of songs all from female artists 💖💪💋 @applemusic https://t.co/a8bfTXKtax

— Lady Gaga (@ladygaga) March 8, 2020

Actresses Scarlett Johansson and Florence Pugh, stars of the next Marvel Studios movie Black Widow, filmed a short video for International Women's Day. The pair spoke on all the female heroines Marvel Studios put on screen over the last 10 years. Black Widow is set to be the second female-led superhero film for the studio after 2019's Captain Marvel.

Happy #InternationalWomensDay from Scarlett Johansson and Florence Pugh! pic.twitter.com/8Q3p7GwmPT

— Black Widow (@theblackwidow) March 8, 2020