Just in time for tank-top season, some of the most high-profile “It” girls are going for a more natural look. Lena Dunham, and “Girls” costar Jemima Kirke, Miley Cyrus, Daria Werbowy and Scout Willis are letting their underarm hair grow, and bragging about it on social media, usually in the pictures of Cass Bird. And it seems to be catching on. When Cyrus posted an image showing off her hirsute look, hashtagging her post “#dirtyhippie,” natch, she got nearly 400,000 likes, suggesting hairy pits are no longer the terrain of just our more progressive liberal arts campuses.

This story first appeared in the June 3, 2015 issue of WWD. Subscribe Today.