The Girls star, who graces one of four separate Elle covers for its new Women in TV issue, expresses her admiration for her fellow actress while chatting about how she dresses for the red carpet.
"I wanted to establish a baseline: Here's what I look like, I have long brown hair, I wear this kind of dress, this is the deal. You can count on it!" Williams tells the magazine. "Look at Jennifer Aniston: she's America's sweetheart for a reason. You know what she's going to look like when she shows up to something, and there's something so comfortable in that."
Williams also reveals that, when it comes to her career, she's interested in doing anything and everything.
"I want to play a villain. I want to play a romantic heroine. I want to play someone who's on heroin. There's nothing I don't want to do. I want to play a guy at some point," the 26-year-old says.
She adds, "I'll gain 100 pounds, I'll cut my hair off, I'll do whatever. I'm not precious about any of it."
Meanwhile, the third season of Girls premieres Sunday, Jan. 12 on HBO.