15-Year Old Taylor Momsen Sure Acts Like a Grown-Up

"I don't leave the house without thinking of how to represent myself," Gossip Girl star Taylor Momsen says in this Sunday's Page Six Magazine. "But I’m not a little kid playing dress up. It's all very real."

Is that what Momsen, 15, was thinking when she was wore her very sophisticated -- some might say too much so -- ensemble during her Page Six Magazine photo shoot?

The shot makes Miley Cyrus' controversial "Vanity Fair" shoot look positively innocent.

PHOTOS: Click for photos of Taylor Momsen in Page Six Magazine and more.

Momsen says its all about the clothes.

“I love Alexander Wang! Oh, and I love Balmain and this new indie designer named Gary Graham. I discovered him; he’s so edgy and different. I like the high-end people—YSL, Dior, Dolce & Gabbana."

As for her reputation as acting a little too grown-up with her Gossip Girl castmates?

"It’s like, yeah, I’m really going to go to a party with my cast and crew and all the executives at the network and dance on tables," she says. "[Tabloids] all want to make me out as this party girl, and I’m not. I’m underage! All I do is sit at home and play guitar. That’s seriously what I do.”

Momsen takes it all in stride, having been in entertainment business for over a decade.

"I'm a Leo. I've always been independent, and this is the lifestyle I have grown up with since I was 3."

For more on Taylor Momsen, check out this week’s issue of Page Six Magazine, free inside the Sunday edition of the New York Post, and online Monday at www.pagesixmag.com.