US actress Reese Witherspoon has lent her support to International Women's Day and Women's History Month, appearing in the Tory Burch Foundation's new campaign, #EmbraceAmbition, which aims to empower women across the globe to share their ambitions on social media.

Burch has enlisted an all-star cast of influential men and women, including Julianne Moore, Gwyneth Paltrow, Camilla Belle, Kate Bosworth, Jamie Lee Curtis, Jon Hamm, Diane Kruger, Lucy Liu, Kerry Washington and Dame Dame Anna Wintour, to join Witherspoon in a new PSA, which can be viewed at www.youtube.com/watch?v=IBRb3aIsUFQ. The fashion designer is also donating all proceeds from sales of the Tony Burch Embrace Ambition T-shirts and bracelets to the Tory Burch Foundation.