She welcomed baby Stormi in February.
And despite only being 20-years-old Kylie Jenner is making sure she's on top of her workout game as she took part in a group class on Friday morning.
The Keeping Up With The Kardashians star stopped mid-session to check herself out in the mirror showing off her trim post-baby waistline.
Working out alongside her was several pals including bestie Jordyn Woods and sister Kourtney, 39.
All the ladies matched in black sports bras and long leggings as they performed lunges moving round in a circle while holding medicine balls aloft.
When Kylie turns 21 next month she will finally be legally allowed to drink alcohol and on Thursday she posted a photo on her Instagram story of a bottle of Don Julio 1942 Tequila, engraved with her name.
© Associated Newspapers Ltd.