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American Idol season two finalist Kimberley Locke is back with a new single Finally Free, and showing off a 40 pound weight loss in the hot new music video for the catchy jam.

Kimberley, who appeared on VH1's Celebrity Fit Club, rocks a handful of fierce outfits in this behind the scenes look at filming the flirty video, including a devil ensemble you just have to see for yourself.

Check out the video to see the Idol favorite in action in L.A.!

Related: Toby Keith Turns Down 'American Idol' Gig

The Finally Free remix package, which includes 11 remixes, is out September 4. ET will also premiere the music video on the same day.