Kristen Stewart goes ultra-glam in the July issue of Vanity Fair -- where she reveals she was teased a lot as a kid for looking like a boy.

She may not look like one anymore, but Stewart says "look at a picture of me before I was 15. I am a boy. I wore my brother’s clothes, dude!"

She continues, "Not like I cared that much, but I remember being made fun of because I wasn’t wearing Juicy jeans ... but it’s not like I didn’t care that they made fun of me. It really bothered me. I remember this girl in sixth grade looked at me in gym and was like, ‘Oh my God! That’s disgusting -- you don’t shave your legs!”

Kristen also opens up about the moment that changed her life: Being photographed with a bong the day the first "Twilight" came out.

"I was no one. I was a kid. I had just turned 18," she says of the photo. "In [the tabloids] the next day it was like I was a delinquent slimy idiot, whereas I’m kind of a weirdo, creative Valley Girl who smokes pot. Big deal. But that changed my daily life instantly. I didn’t go out in my underwear anymore.”

Check out a sneak peek at Mario Testino's gorgeous photo shoot with Kristen in the gallery above, plus a behind-the-scenes look below: