Fifteen young women from around the United States have been recognized by the White House for their advocacy on a range of issues to improve their communities.

President Joe Biden and celebrities including Billy Crystal and Lin-Manuel Miranda are part of a TV special aimed at boosting COVID-19 vaccination rates.

In honor of International Day of the Girl on Oct. 11 -- a day observed globally and created by the United Nations to acknowledge the gender inequality that exists worldwide -- the 38-year-old royal took to the Sussex Royal Instagram to share some powerful words aimed at young girls. "She has the right to learn, the right to be heard, the right to play and to discover. The video comes just one day after Meghan's husband, Prince Harry, teamed up with Ed Sheeran for an adorable video made in honor of World Mental Health Day. I'm going to go and film a thing with Prince Harry. RELATED CONTENT:Ed Sheeran and Prince Harry Team Up in Hilarious Video for World Mental Health DayPrince Harry and Meghan Markle Aren't Moving to Canada, But Want to Have Extended Trips in More Countries

Its International Day of the Girl and Meghan Markle shared a throwback clip of herself that was previously broadcast by Inside Edition. In the clip, young Meghan speaks out against an advertisement she perceived as sexist against women. In the full, inspirational video on Instagram, Meghan also encouraged girls to have confidence. "Every girl has the right to learn, the right to be heard, the right to play and to discover. Every girl has the right to be exactly who she is, Meghan says in the video.