How Emma Watson, Reese Witherspoon and other stars celebrated International Women's Day

Emma Watson, Reese Witherspoon, Gisele and more stars took to social media on Mar. 8 to celebrate International Women's Day. From inspiring messages to calls to action, Hollywood's leading ladies are taking a stand for women around the world.

Emma Watson
@emmawatson: Today I'm a red-striking ninja book-fairy, out to spread some wise women's words. Happy International Women's Day! @bookfairiesworldwide #IWD #IWDOurSharedShelf #adaywithoutawoman

Cara Delevingne
@caradelevingne: What I’ve always wanted most is women and girls working together, and lifting each other up. There’s such a big world out there, and if you just take time to look outside of yourself, there is so much that can be done. In honor of International Women’s Day, I have a special announcement coming your way. Tune into my Instagram live at 6:15PM EST to hear more. #InternationalWomensDay #DoYou #girlstrong

Alicia Keys
@aliciakeys: I will raise my children to be beautiful human beings and powerful men who understand how magnificent women are. I believe that all women, all over the world, are beautiful, whole and powerful. They should be honored like goddesses, not just on International Women’s Day, but every day. We must continue to lift each other up, believe in ourselves and not hold back from this truth. #InternationalWomensDay

Naomi Campbell
@iamnaomicampbell: We are strong, we are powerful, we are women #InternationalWomensDay #Strength #strongertogether

Kerry Washington
@kerrywashington:Join me along with the @ToryBurchFoundation @ToryBurch and others and #EmbraceAmbition! Own your power, your drive and your dreams. Join the movement to empower women and girls ---> Embraceambition.org

Reese Witherspoon
@reesewitherspoon: On this #InternationalWomensDay I'm honored to be part of the @toryburchfoundation #EmbraceAmbition movement! All women deserve to embrace ambition and support each other as they do so! #GirlPower ❤️

Christy Turlington
@cturlington: Who rules the world? Empowered, Independent, Educated Girls & Women like these beautiful and spirited Maasai secondary school students in Tanzania at #MWEDO. Happy International Women's Day! #IWD2017 @everymomcounts #girlscount @onecampaign #whatispossible

Diane Kruger
@dianekruger: In honor of tomorrow's International Women's Day let's #EmbraceAmbition with the @toryburchfoundation and @toryburch ❤ We can be all of this......strong,powerful,soft,sexy,funny,smart,talented,nurturing AND ambitious !!

Queen Latifah
@queenlatifah: To one of the strongest women I know, happy #internationalwomensday ❤️️ #sheinspiresme

Poppy Delevingne
@poppydelevingne: And a few more of my favourite SENSATIONAL ladies #InternationalWomensDay

Sarah Jessica Parker
@sarahjessicaparker: On this #internationalwomensday I stand shoulder to shoulder with all women near and far and I salute and celebrate the tireless commitment, love and dedication you share with your families and communities.
I start with my own strong, heroic, magical and beloved mother.
X, sj

Shay Mitchell
@shaym: Today, on International Women’s Day, I’m empowering all of my girls out there to be the strong, empowered girl bosses that we are! And thanks to Tinder, it’s super easy to make a difference today. Get involved by choosing your favorite women’s cause at http://tinde.rs/2lTzWWV (where you will get $100 to donate to your favorite cause) and then tweet @Tinder with #FundHerCause! She’s the First is a cause that inspires me, which is why I am nominating and supporting this organization today and everyday #partner #IWD2017 #mebeingagirlboss

Jessica Alba
@jessicaalba: Today is #InternationalWomensDay. To many it’s a typical calendar date, but to me, it’s a day to reflect on the importance of being BOLD and how we can all challenge ourselves to #BeBoldForChange. Read my essay via @LinkedIn at the link in my bio and tell me...how will you be bold? | Art via the talented @kimothyjoy

Gisele Bündchen
@gisele: It's time to end all forms of discrimination. Let's support and love one another. Happy Women's Day for all women around the world! #equality #loveistheanswer #weareone #internationalwomensday ❤ É hora de acabar com todas as formas de discriminação. Vamos apoiar e amar uns aos outros. Feliz dia das mulheres para todas mulheres ao redor do mundo! #igualdade #oamoréaresposta

Elle Fanning
@ellefanning: Grateful to be surrounded by the strongest women #happyinternationalwomensday #girlpower

Tracee Ellis Ross
@traceeellisross: Sporting my limited edition #InternationalWomensDay tee by @MarcJacobs & @TheRealGraceCoddington! Net proceeds benefit @PlannedParenthood NYC. Available at MarcJacobs.com #WomensRightsAreHumanRights

Princess Marie Chantal of Greece
@mariechantal22 Celebrating all women! And especially to the ones in my life

Mindy Kaling
@mindykaling: Happy #InternationalWomensDay! Tag a strong woman you admire #BeBoldForChange