This isn't the first big reveal for Tallulah this year. In August, she debuted her major weight loss, confessing that she suffered from body dysmorphia.
"I was trapped in this body," she explained in a video for StyleLikeU. "I started starving myself and losing a bunch of weight and I got down to like 95 pounds. When I lost my curves and when my boobs shriveled up into like nothing and I had no shape, it put me in even more of a cage." Check it out, below.