When it comes to red-carpet dressing, PYTs the world over tend to stick with the three S’s: short, strapless and slim fitting. But recently, several beauties have ditched the strapless part of the equation for longer sleeves. Take Kate Hudson vamping in sparkly Chanel and Jessica Stam laced up to the neck in gray Gareth Pugh at movie premieres in New York. Likewise, model Karlie Kloss wore a statement-making red Wayne at an event for the Vogue/CFDA Fashion Fund, and fellow model Amber Valletta sported a scoopneck number she designed for Monrow at a party in Los Angeles. Forget the right to bare arms: These ladies are concealing their weapons.