Steven Alan's Flannel Ruffle Shirt ($163) exudes a comfy and quirky vibe, hence why Mary-Kate Olsen got her hands on it and wore it while chillin' on the streets of NYC. (Natalie Portman also wore the shirt recently.) Our friends over at Rarechic are nice enough to provide a 15 percent discount on any item for FabSugar readers. Just enter Happy2008 at checkout. Side note: Doesn't MK look like Meg Ryan here? Trippy.