Kate Mara was at The Academy in Beverly Hills last night for the “127 Hours” LA Premiere.

The actress wore a turquoise Peter Som Spring 2011 ultra mini dress.

Instead of wearing the sleeveless shirt like the model, Kate wore a beautiful Amrapali diamond collar necklace to give the look more sophistication.

My first thought was that her look needed a belt, but on reflection I think a stand out clutch and a matching cuff would’ve made this look more exciting.

The one thing I won’t knock are her ruby heels, despite the fact I wish they were strappy sandals instead of pumps.

Credit: Style.com & Bauer Griffin