Kim Kardashian West has enlisted the help of her daughters, seven-year-old North West and two-year-old Chicago West, for a new SKIMS ad campaign, in which the trio models looks in the latest Cozy collection from her shapewear brand.In a series of photos posted to Instagram, the family wears the all-white set as they bundle up and cuddle for the cameras. "Our most-wanted @SKIMS Cozy loungewear collection just got bigger and better than ever," the caption read.