U.S. soccer star Megan Rapinoe endorsed Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) for president through an Instagram post Friday.

Rapinoe's caption of the post — a video of Rapinoe and Warren talking on the phone — reads: "I truly believe the best things in life are a result of being bold and being real. This extends to every part of my life and nothing feels more relevant and real than this election."

"I’m proud to endorse @elizabethwarren today, for being bold, for being real, for listening to ALL of us, and for being prepared to navigate the unique challenges we face today as a country."

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The 34-year-old midfielder, who this year has won both Ballon d'Or Féminin and FIFA's Player of the Year, has never been quiet about political causes she believes in.

She's an avid supporter and activist for LGBTQ rights, pay equality for women and has voiced her support of former NFL quarterback Colin Kaepernick. Rapinoe has also been a vocal critic of President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE and his policies.

“I’m from Trump country. But I’m able to travel the world and live in very liberal places now,” she recently told Sports Illustrated, which recently named her its Sportsperson of the Year. “I am sort of in all the worlds at once.”