Kendall Jenner & Hailey Bieber Show Off Fit Physiques Leaving Hot Pilates Class

Kendall Jenner and Hailey Bieber are working up a sweat together!

The model BFFs met up for an afternoon hot Pilates class on Thursday (January 27) in Los Angeles.

PHOTOS: Check out the latest pics of Kendall Jenner

While leaving the class, Kendall, 26, showed off her fit physique in a gray crop top and black leggings while Hailey, 25, bared her toned tummy in a tan sports bra and matching leggings.

The night before, Hailey was spotted attending an evening church service with hubby Justin Bieber, who tried to stay under the radar while wearing a very interesting face mask.

Kendall recently returned home to California after enjoying a ski trip in Aspen with one of her famous friends!

Click through the gallery for 20+ photos of Kendall Jenner and Hailey Bieber leaving the Pilates class…