Rachel and Sienna at the G.I Joe Japan Premiere

The cast of G.I. Joe: The Rise Of Cobra at the movie's Japanese Premiere on July 27. Model Karolina Kurkova was missing from the event because at six months pregnant she probably doesn'twant to travel too much. Still, her two co-stars didn't let down in the style stakes.

Rachel Nichols looked truly stunning in a red gown and gold YSL Tribute platform sandals.

And Sienna Miller was literally a shining star in an ultra sparkly Gucci blazer, with matching trousers, a silk shirt and Gucci platform booties.

Pics from Zimbio and Just Jared