Barbara Tfank doesn t do trends. The Los Angeles-based designer aims to create "timeless" dresses that a mother will pass down to her daughter one day or, even better, dresses that both a mother and daughter could wear in the same week to different events. Tfank s "jewel box" collection for Resort featured classic silhouettes cut from expensive French taffeta, which the designer favors because "it s beautiful fabric that changes with the lighting." A full, tea-length skirt with a shot of sparkle paired with a simple knit T-shirt looked tailor-made for Mad Men s Betty Draper, but like it or not, Tfank may end up trendy. Michelle Obama recently wore one of her designs to Buckingham Palace to meet the Queen.