Just because Sienna's wearing Balmain fresh off the spring runway doesn't mean we can't take a little inspiration from her. For those of us without the patience (or the cash!) to wait for this dress to come out, there are similar options that will create a look just as gorgeous.

A fitted sequin dress goes ladylike with pumps but can also be a little more rock'n roll paired with ankle boots. Take your pick but just make sure not to miss out on your fair share of holiday sequins!

Sienna Miller is at Anna Wintour's side for the premiere of The September Issue in NYC. She shows off her toned legs in a pixie-ish pastel minidress and gold sandals. A flirty strapless piece is a great staple to have on standby in your closet, it's the easiest way to get yourself dressed up quickly!

Sienna Miller clutches her Blackberry tightly as she heads to CBS in New York City in silver sequins and a knee length skirt. The fluidly draped material of the skirt is as flattering as it is comfortable, and dressed up with sequins and platforms it makes for a standout wardrobe piece.