The Michelle Mason girl goes out at night, and the fall collection is all about the P.M. We love how Mason by Michelle Mason does sexy because it's body conscious and flattering but sophisticated, tailored but easy to wear. Our pick is the Waist Cut-Out Dress, simply because it's party season and no one can top you in this dress when it comes to dropping jaws. The cross back halter with cutout at the waist is bold and definitely makes this the sexiest LBD of the season so far!