Fashionista Shopping Party Thursday, March 2, State Street, 5-8 p.m. R.S.V.P. to 312-781-3055. Shop the hottest trends from BCBG, Theory, Nanette Lepore, Tracy Reese, and more. Enjoy cocktails and hors doeuvres while celebrity fashion stylists Estee Stanley and Christina Ehrlich offer insider styling tips. Happy Hour at the Beauty Bar Friday, March 3, State Street, 5-8 p.m. R.S.V.P. to 312-781-5445. Its an evening of girls behaving beautifully. Enjoy cocktails, hors doeuvres, and complimentary pampering treatments as you preview the latest spring color, skin care, and fragrance collections with expert makeup artists and Marshall Fields beauty expert Fatima Olive. Call now to reserve your space and schedule a consultation. Trend Preview Event Saturday, March 4, Water Tower, noon-4 p.m.Enjoy a day of trunk shows, stock shows, and informal modeling featuring the spring must-haves. Includes Etro, Marc Jacobs, Chaiken, Catherine Malandrino, and Elie Tahari. Also get personal style tips from vendor representatives.