30 day squat challenge Butt Workout: The 5 Best Exercises for a Tight, Toned Butt - Shape Magazine
The Best Butt Workout - Hip Thrusts, Donkey Kicks, Fire Hydrants, Plie Sumo Squats + Side Lunges. The girl in the pic is prob all of 18 years old, but what tha heck.
Standing on the resistance band (adjust your feet until you find the right resistance) and keeping your elbows into your sides, curl the band up and out, making a W shape.