Give your booty a boost with the help of New York-based celebrity trainer Kacy Duke, whose client list includes Julianne Moore, Gwen Stefani and Mary J. Blige. Before you begin these moves from Duke's new I Am, I Can, I Do: Body BreakthroughDVD, grab a chair with a solid back (or a body bar, like the one Duke uses) and a 3 to 5 pound medicine ball (or dumbbells). Then, warm up with 5 minutes worth of jumping jacks before completing the following 10 moves in succession, 3 times per week. You should see a better booty in just six weeks -- even less if you do the circuit 2 times in a row.
Booty Boost #1: Knee Lift & Lunge Start by standing with your feet shoulder-width apart, your chest lifted, shoulders back, abs tight, left hand on your hip and right hand on the back of a chair. Begin by lifting your right knee up to a 90-degree angle. Hold this pose for 2 counts then bring your leg down and touch your toes on the ground, 2 to 3 feet behind you. Lower your right knee towards the floor until both knees are bent at 90-degree angles. Push off your right foot and return directly to the knee-lifted position. Repeat 8 times and switch sides.
Better Booty Tip: “Use your lower body for control!” says Duke. Relying on the chair won't challenge your butt muscles as much, which can sap your sculpting results.