WATCH: Alessandra Ambrosio Gets Down With Justin Bieber (Well, Sort of)

We had no idea Alessandra Ambrosio could channel her inner-teen swag so effortlessly. In a video with her fellow Victoria’s Secret models, the 31-year-old Brazilian bombshell can be seen lip-syncing to Justin Bieber’s single "Beauty and the Beat" ft. Nicki Minaj. The video, which was uploaded over the weekend, gives viewers a behind-the-scenes look at the Victoria’s Secret Fashion Show 2012 which airs tomorrow, December 4 at 10/9c on CBS.

Just like the Biebers’ music video begins, the Victoria’s Secret video begins with a note stating that 2,700 hours of personal footage of the models with the 18-year-old wunderkind were “stolen” and uploaded by anonymous bloggers. The video’s mood is lighthearted, with the models laughing jovially and shaking their thang onstage at rehearsal – some expertly, others awkwardly. There’s some playing with iPhones as well. Other models featured in the video include Ambrosio’s compatriot Adriana Lima, Erin Heatherton, Lily Aldridge, and Miranda Kerr. Ambrosio is a natural (of course) in front of the camera, and helps introduce the video with a playful “Biebahhh!”

Check it out for yourself to see what we mean.