Billie, the female-first body brand, has finalized its $6 million seed round by closing its most recent investment. The round was led by Silverton Partners with existing investors Female Founders Fund and Lakehouse Ventures also participating. The funds will go to support Billie’s continued growth, including building out the team and increasing inventory.   Launched in November 2017, Billie’s subscription-based model, which brings premium-quality razors uniquely designed for women and good-for...