Ever since she burst onto the scene as America's sweetheart in the late 1980s, Julia Roberts has done the red carpet her way. That means wide smiles and more than a nod to menswear silhouettes. She is an actress who often wears a waistcoat or a pair of trousers to a film premiere, a tall, confident tomboy amid tiny delicate stars. Even when she wears a ballgown there is something robust about it and the dresses she chooses could never be described as 'girly'. This is a woman for whom tulle is not an option.