Amber, who recently split from hubby Wiz Khalifa, is joined by gal pal Blac Chyna for their bouncy take on a workout video. This one is of the b*ooty kind.

Kanye West‘s ex even filmed in slow motion so we can watch all of the jig*gle action up close and personal.

Filmed at 3 a.m. in the morning, you have to wonder what possessed the backside blessed duo to get their t*werk on at such a later hour? Was the baby keeping Amber up?

Watch the videos here -- http://www.mayowalee.com/category/instagram/ and behold!!