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 Hailey Bieber were spotted leaving a Pilates class together on Thursday. More pics on our site! #KendallJenner #Hailey

Kendall Jenner & Hailey Bieber Kick Off the New Year at Pilates Class: Photo 4686036, Hailey Baldwin, Hailey Bieber, Kendall Jenner Photos

Kendall Jenner & Hailey Bieber Kick Off the New Year at Pilates Class: Photo 4686049, Hailey Baldwin, Hailey Bieber, Kendall Jenner Photos

Kendall Jenner out after Pilates with Hailey Bieber and Justine Skye amid Harry Styles rumors

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

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

Hailey Bieber & Kendall Jenner Meet Up for Afternoon Pilates Class, Hailey Bieber, Kendall Jenner

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

Kendall Jenner and Hailey Bieber were spotted leaving a Pilates class together on Thursday. More pics on our site! #KendallJenner #Hailey

Hailey Bieber and best friend Kendall Jenner jump-start the holidays with a private Pilates session