Our leather fascination grows . . . thanks to Nicky's cool sweatshirt-slash-leather-vest jacket. If full-on leather is too much tough for you, how do you feel about leather inserts? Whether as sleeves, trim, pockets, or shoulder details, leather play is in effect. Denim and heather gray sweatshirt material are my favorite contrasts; the casual juxtaposed with the slick. Dresses and party tops also benefit from a slice of leather. Leather here, leather there, leather everywhere!