The newest addition to The Gymboree Corporation’s family of labels, Crazy 8 - Potomac Mills offers fashionable outfits at the great value for girls or boys sizes Newborn to 14. The first Crazy 8 - Potomac Mills store opened in August 2007, or The Gymboree Corporation currently operates more than 300 Crazy 8 - Potomac Mills stores in the U.S.