While you share Sir Mix-a-Lot’s affinity for black fedoras and chunky gold rings, he’s on his own when it comes to big butts. Get your rear in gear with Pop Physique, a unique barre workout blending light weight exercises with ballet, Pilates, and yoga. Formulated by former pro ballerina and Pilates instructor Jennifer Williams, the technique uses intense isometric holds; small, concentrated strengthening movements; and deep stretches for maximum muscle sculptage, promising better abs, arms, legs, and buns after just a few sessions. Classes go on seven days a week at the new studio (which features a fancy sound system, sprung dance floors, and ecofriendly mats) and are capped at fifteen people to ensure everyone gets the personal attention they need. And nobody gets a bum deal. Pop Physique, 3501 West Sunset Boulevard, at Golden Gate Avenue, Silver Lake (323-665-7777 or popphysique.com).