Watch as (expecting!) yoga instructor Kristin McGee demonstrates how to keep your butt in shape during your entire pregnancy.

More butt-toning videos from top trainers:

Brynn Jinnett, founder of Refine Method
Sit at a desk all day? Activate your neglected glutes and they’ll firm up in no time.

Cassey Ho, Pilates instructor,
Try these power-Pilates exercises to target saddlebags and outer thigh bulge.

Mary Helen Bowers, founder of Ballet Beautiful
Ballet-inspired moves to lift and tighten a saggy butt.