These celeb-tested moves will improve your rear view.

They're coming.

Sundresses. Short shorts. Swimsuits.

Just in time for skimpy clothes season, celeb trainer Holly Perkins is here to reshape your rump. (Psst...She's worked with everyone from Entourage's Adrian Grenier to a former presidential candidate.)

Go here for three simple moves to tone your tush. Do 10 reps of each exercise every other day for three weeks to boost your booty. There's no equipment required. "This workout is so effective because it engages your glutes throughout a broad range of motion," Perkins says. Translation: Your butt will look bangin' from all angles! For even faster results, tack on 35 minutes of vigorous cardio after each booty workout.

Get the free workout here.

Want more fit tricks? Download Holly's exercise videos here.

Baby got back.

Know someone who wants to get slim for spring? Share this news!