Hailey Bieber rocks a blue sweatshirt and grey leggings as she attends a hot yoga class

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

Hailey Bieber dons leggings as she heads to Pilates, husband Justin hits up recording studio in LA

We Never Thought We'd See Leggings Like This Come Back—But We Love Hailey Bieber's Nude Pair! - SHEfinds

hailey bieber shows off her toned figure in black crop top and grey leggings as she heads for a workout in los angeles-120121_8

Hailey Bieber Steps Out in Yellow Butter Slides, Cropped Sweatshirt & Chic Leggings for Pilates Class Workout - Yahoo Sports

kara del toro at the revolve awards in los angeles-021117_12

Star Tracks: Hailey Bieber, Bella Hadid, Courteney Cox and More [PHOTOS]

Alo Yoga Is Beating Lululemon at Its Own Game - WSJ

charlotte mckinney attends the launch of the tampa edition in tampa, florida-211022_11

billie eilish grabs coffees with her new boyfriend matthew vorce while out on a walk with her dog in encino, california-160421_3

Celebrity fit club: How the stars stay in shape – New York Daily News

Hailee Steinfeld looks stunning in white while visiting 'Good Morning America' in New York City

Star Tracks: Hailey Bieber, Bella Hadid, Courteney Cox and More [PHOTOS]

Stars Who Love Yoga: Pics of Celebs With Their Mats – Hollywood Life

kylie jenner looks stunning while attending malika and khadijah haqq's 40th birthday party in west hollywood, california-100323_3