Combat Hoots: Sienna Miller had a lot riding on "G.I. Joe: The Rise of Cobra." Its success would have made the difference between being a bankable Hollywood leading lady or a B-list tabloid target best known as "that starlet Jude Law cheated on with the nanny" and "that starlet who cavorted topless with a still-married Balthazar Getty." Sienna suited up for box office battle at the flick's Tokyo premiere by clomping onto the red carpet in combat boots, albeit peep-toed, ridiculously expensive designer combat boots. And like a good promotional soldier, she set off a glitter bomb in a "Dynasty"-shouldered sparkly jacket, matching splotchy pants, and an electric blue button-down shirt. In an haute couture instant, Miller laid waste to unprotected corneas with a blinding flash of gaudiness that was designed to get people talking, although it remains unclear whether they said anything beyond, "My eyes! My eyes!"