Jessica Biel

Adding menswear flair to her look, the actress is chic in a blazer and floor-sweeping trousers paired with a black and white button-down – all from Yves Saint Laurent – at the Easy Virtue photocall in Rome.

Source People.com Image: Venturelli/WireImage

Kate Beckinsale

The actress looks angelic in a white strapless Yves Saint Laurent bustier and skirt accented with a black belt and pumps by the French label for a Martin + Osa event supporting FilmAid International in Hollywood.

Source: People.com Image: Jordan Strauss/WireImage