She joined fellow up-and-coming screen stars including Kristen Stewart, Emma Roberts, Blake Lively, Zoe Kravitz and Leighton Meester for a young Hollywood-themed cover shoot.
According to WENN, the An Education actress felt intimidated stepping in front of the camera.
"It was a good day of trying on clothes that were too small for me and trying to sit in a flattering way," she said.
"I'm not that great at having my photo taken, so I often look like I don't want to be there. Annie [Leibovitz] makes you feel comfortable after a while but it's still staring down the barrel of a camera, which still feels pretty unnatural."