Mariah Walton owns a trendy Philadelphia clothing boutique, West London. And this 29-year-old Philadelphian knows how best to show off the merchandise — by wearing it herself. We "glimpsed" Walton at the Havana Club, where she was a guest at the annual fundraiser for Holding the Line Foundation, founded by NFL free agent Jason Murphy to help underprivileged youth in sports mentorship programs. Walton looked oh-so-chic in a dress of her own design. It had a turquoise, yellow and black crochet bodice, with a black lace back and a black cotton bubble skirt embroidered with flowers. Her crystal and gunmetal snake choker came from a boutique in Newport Beach, Calif. She found her sea-foam metallic leather and suede slingback stilettos in the BCBG store, and her Yves St. Laurent silver leather clutch came from Saks Fifth Avenue.