The Insider.com

Despite being part of one of the biggest movie franchises of the decade, Twilight beauty Kristen Stewart still seems a bit shy in front of cameras.

• September 14, 2012New York Fashion Week Madness!
• September 13, 2012Heather Morris Fashion Time Warp
• September 13, 2012Trend Spotting: Fingerless Gloves!
• September 13, 2012Get Britney's Pop-Star Physique
• September 13, 2012Jennifer Lawrence Stuns As Face of Gen W
• September 12, 2012Gwyneth Paltrow Fashion Time Warp

In what is her first major campaign, Stewart, 22, takes fans behind the scenes of her Balenciaga Florabotanica fragrance photo shoot, and admits that the opportunity is a bit surreal. "I've never done anything like this, so I'm pretty proud," the actress confesses. "It's an odd relationship that us actresses get to have with fashion. It's not something I ever imagined myself fitting into."

She adds about the brand, "Not to sound completely obvious, but it's incredibly bold."

Balenciaga's creative director Steven Meisel was also interviewed for the behind-the-scenes video piece, and revealed why he chose Stewart to represent his brand. "For me, Kristen Stewart has a very unique personality. ... Right away, I thought she was a Balenciaga girl."

RELATED: Kristen Stewart's Balenciaga Ad

Does Stewart make for a good high-fashion model?