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While promoting her new film The Back-up Plan this week, Jennifer Lopez proved that’s the last thing she needs when it comes to looking stylish. She kicked the week off on Today, greeting early risers in a scarlet Halston minidress and Christian Louboutin peep-toes. That evening she appeared on Late Night with David Letterman in a blush Donna Karan jersey dress. Our favorite J.Lo look of the week? The luminous one-shoulder Gianfranco Ferre dress she wore to the film’s L.A. premiere, which she paired with Ferragamo peep-toe pumps, a studded Christian Louboutin clutch and Cartier jewels (left). She finished the week in a George Chakra nude dress for the Us Weekly Hot Hollywood Style event, where she was fittingly awarded Style Icon of the Decade. Click on the gallery to see all of Lopez’s super stylish looks.