BURBANK, California — It’s a scene that probably wouldn’t be out of place up the road at Hef’s humble abode, but here in a dance studio in Burbank, it’s a decidedly different affair.

The Pussycat Dolls — a five-piece now, since the departure of Carmit Bachar back in March — are bumping, grinding and sweating with a shocking level of precision and professionalism. They’re putting the finishing touches on their performance for Sunday night’s MTV Movie Awards, a shimmying, gyrating showstopper that’s designed to both drop jaws and promote “When I Grow Up,” the first single from their upcoming new album (due later this year).