Today Victoria's Secret is launching what it expects to be its biggest bra in VS history -- the Incredible by Victoria's Secret, a new seamless wonder that features memory fit and comes in three shapes: the push-up, demi, and racer back.

To show off the new wears, the lingerie giant tapped models Rosie Huntington-Whiteley, Erin Heatherton, Chanel Iman, and Candice Swanepoel to wear the Incredible in both print and television campaigns.

StyleList got an exclusive behind-the-scenes peek at the ads, in which the stunning models walk the runway in their Skivvies and talk about the "revolutionary" bra.

We also caught up with the uber-busy Huntington-Whiteley, who is also the face of Burberry and Thomas Wylde, has replaced Megan Fox as the new "Transformers 3" babe, and appears on the cover of the latest Love magazine (in pinup attire, no less).

Our chat with the 23-year-old English bombshell, below.

StyleList: What makes the Incredible by Victoria's Secret different from other bras?
Rosie Huntington-Whiteley: It's the most comfortable bra I've ever worn. It smooths and shapes without pinching your back.

SL: There are three styles. Which is your favorite?
RHW: The demi. It's perfect for everyday wear under a T-shirt.

SL: You appear in your bra and panties in the new ad. What was your exercise and diet routine before the shoot?
RHW: I eat healthy organic food and work out with my trainer Jason Walsh in L.A. whenever I can.

SL: We know you are a strong believer in "chicken cutlets," those rubber bra inserts. Do you use them in daily life?
RHW: I never use them in my free time. But they are great for that extra lift when working.

SL: What are your beauty must haves?
RHW: Water, sleep, exercise, organic food, and regular facials.

Surprisingly, that actually sounds like a routine we could get down with.

Check out all the "Incredible" action below:



In other news, find out which Canadian beauty is the latest Victoria's Secret PINK model.