Fashion Week
Fashion Week Guide: Star Designers You Must Know
From Lauren Conrad's cute staples to Selena Gomez's bargain finds, see which celebrities do double duty as Hollywood's hottest designers
Credit: George Pimentel/WireImage
Updated: Thursday Feb 10, 2011 | 06:00 AM EST By: Alex Apatoff
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MARY-KATE & ASHLEY OLSEN
The hardworking design duo may helm a host of successful lines including Elizabeth & James and Olsenboye, but their high-end line, The Row, has been growing steadily for four years. Recently adding accessories and menswear to the collection, The Row's simple aesthetic has gained traction among A-listers. Their latest fashion foray? The perfect affordable T-shirt!

