Hailey Bieber and Kendall Jenner were spotted at a Pilates class on Monday afternoon after spending New Year's weekend. #HaileyBieber #

Kendall Jenner and Hailey Bieber showcase their runway figures in leggings as they arrive to Pilates

Hailey Baldwin joins Kendall Jenner for pilates before lunch with Justin Bieber

Kendall Jenner steps out with pal Hailey Bieber for Pilates session in LA

Kendall Jenner & Hailey Bieber Take a Monday Morning Pilates Class Together

Kendall Jenner & Hailey Bieber Kick Off the New Year at Pilates Class: Photo 4686066, Hailey Baldwin, Hailey Bieber, Kendall Jenner Photos

Kendall Jenner and her best friend Hailey Bieber are seen leaving a hot pilates class in LA

Kendall Jenner and Hailey Bieber showcase their runway figures in leggings as they arrive to Pilates

Kendall Jenner and Hailey Bieber meet up for a Pilates class in LA # KendallJenner #HaileyBieber Photos: Backgrid

Hailey Bieber and Kendall Jenner were spotted at a Pilates class on Monday afternoon after spending New Year's weekend. #HaileyBieber #

Kendall Jenner and her best friend Hailey Bieber are seen leaving a hot pilates class in LA

Kendall Jenner and her best friend Hailey Bieber are seen leaving a hot pilates class in LA

Hailey Bieber & Kendall Jenner Meet Up for Afternoon Pilates Class: Photo 1336590, Hailey Bieber, Kendall Jenner Pictures

Hailey Baldwin joins Kendall Jenner for pilates before lunch with Justin Bieber

Kendall Jenner & Hailey Bieber Show Off Fit Physiques Leaving Hot Pilates Class: Photo 4695937, Hailey Bieber, Kendall Jenner Photos