Maybe she was just bored with her dress choice?
The gorgeous actress donned a deep red Lanvin gown, which featured some hand-y pockets, but the design looked odd. It's almost like there was too much fabric for her slim frame!
But Dianna rocked it just about as hard as she could, with her chunky gold cuff and glam makeup.
It's not her best look, but she made it work!
[Image via WENN.]