Blue Life Kate Maxi Dress in Purple. - size XS (also in ) Blue Life Kate Maxi Dress in Purple. - size XS (also in ) 54% viscose 46% cotton. Dry clean only. Partially lined. BLUE-WD339. D136 9616. You may have heard about the trendy Planet Blue boutique in Malibu and Beverly Hills, but did you know about the store's own brand, Blue Life? Comfy hoodies and tees that aren't your basic old pieces, with details that will have you coming back for more.