Insiders Share Secrets from Caitlyn Jenner's 'Vanity Fair' Cover Shoot

Industry insiders share the secrets behind Caitlyn Jenner's 'Vanity Fair' cover shoot.

Overnight, Caitlyn Jenner has become a fashion sensation. The corset on the Vanity Fair cover was bought at the legendary Hollywood shop Trashy Lingerie. All the Kardashian ladies have shopped there.

We put the corset on one of our models. It's called the "Edy" and costs $200.

We asked the owner of Trashy Lingerie, Randy Shrier, if the phone had been ringing off the hook.

He told INSIDE EDITION, "The phone has not stopped ringing all day."

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He added that Vanity Fair gave him no indication who'd wear the corset when they called.

He said, "Someone called a few weeks ago needing something for a Vanity Fair photo shoot and asked for a corset and someone came in a few hours later and picked one up. And then they called a later and they needed a couple of more."

Gigi is a transgender model and she has nothing but praise for Caitlyn Jenner.

She told INSIDE EDITION, "I think she looks epic. She's not only my icon and someone I look up to, but she's a legend for everyone. Everyone knows who Caitlyn Jenner is now because of that cover."

Caitlyn wore top designer labels for the shoot, including a glittering Badgley Mischka. She also wears a black lace corset from Agent Provocateur. And, reclining on the sofa in her Malibu home, Caitlyn wore Herve Leger.

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Caitlyn's inspiration included movie icon Lauren Bacall and the original The Thomas Crown Affair starring Faye Dunaway.

Fashion editor Katrina Szish told INSIDE EDITION, "Caitlyn Jenner has this very elegant lady-of-a-certain-age uptown, luxe, sophisticated, pretty much 'glamazon' look."

The cover shoot was top secret. Rather than borrow the designer dresses, they were bought off-the-rack at exclusive stores. And, the Vanity Fair stylist says her office workers thought she was preparing to photograph Barbra Streisand.

Caitlyn Jenner is said to be thrilled with how she looks and the cover will no doubt be one of Vanity Fair's best sellers ever.

Watch Below: Bruce Jenner Steps Out as Caitlyn on 'Vanity Fair' Cover