EXCLUSIVE: Inside the Final Auditions for the Victoria's Secret Fashion Show

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ET was exclusively behind the scenes during the final auditions for the Victoria's Secret Fashion Show in Paris this year, and we found out just what it takes for a young model to make it on the runway in the annual event.

While the all-star lineup of Victoria's Secret Angels will include returning favorites like Adriana Lima, Alessandra Ambrosio and Lily Aldridge, there will also be a slew of new faces. The rookies first have to prove themselves in a series of cutthroat auditions.

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The rules are simple: minimal makeup is allowed and all the girls must wear the same black panties and bra paired with stiletto heels.

While the aspiring Angels' attire is the same, there are three qualities that can set them apart: a confident strut, a dynamic personality and discipline.

"You work out for sure," model Joan Smalls told ET. "And make sure you drink more water."

"I did a juice cleanse for a week, which killed me," added Alanna Arrington. "But it was still worth it."

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After getting cast in the show, one of the next challenges is staying safe. Reportedly, show producers initially kept the show's location secret out of concern over possible attacks.

"There is a lot of security because it's a high profile event," executive producer Monica Mitro said. "And We have the musical artists, we have the models, we have the audience. We always have very tight security."

No word yet on whether veteran Angels Behati Prinsloo and Candace Swanepoel are joining the show after recently having babies, but model Lily Donaldson had nothing but encouraging words for the beautiful moms.

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"They're the most beautiful women ever and they've had two amazing babies," she said. "Hopefully they'll be back, but we don't know."

The Victoria's Secret Fashion Show airs on Monday, Dec. 5 on CBS.

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