Popsugar Fitness Celebrity Instagrams Best Celebrity Ab Workouts on Instagram 10 Celebs Share Their Awe-Inspiring Abs — and the Exact Moves That Helped Them Get There November 20, 2019 by Maggie Ryan View On One Page Photo 9 of 14 ADVERTISEMENT () Start Slideshow View this post on Instagram A post shared by Kate Hudson (@katehudson) on Feb 22, 2019 at 10:04am PST Share This Link Copy ← Use Arrow Keys → 9 Kate Hudson Doing . . . Something Crazy on a Pilates Reformer Don't know exactly what's going on here, but judging by that slow speed and how loudly Kate Hudson is singing "Shallow," this move is really hard. Previous Next Start Slideshow Celebrity InstagramsWorkoutsCelebrity FitnessAb WorkoutsAb Exercises