“Besties raising Besties #dreamscometrue #maxandwilder #bff @caceecobb,” the singer-turned-entrepreneur, 36, Instagrammed the slideshow of snapshots of the girls playing with makeup.
Cobb and Simpson have been BFFs for years. Fans got a close look inside their friendship on the former MTV reality show, Newlyweds.
Cobb, 39, and the Scrubs star, 43, are also parents to nearly 4-year-old son Rocco.
Simpson and husband Eric Johnson recently celebrated their son Ace’s 4th birthday with a Moana-themed party.