From our US blog, ShinyStyle: She may have labelled "too toothy" by Anna Wintour once, but that hasn't stopped the Vogue editor by featuring Sienna Miller on her cover for a second time. The British actress has landed the July '09 cover of the glossy style bible. Given some serious hair extensions, Sienna looks slick in a one-shouldered custom red silk dress by Calvin Klein. Photographed by Craig McDean, she also wears designs by Alexander Wang, Nina Ricci and Gucci. What do you think of this cover compared to her last one in September '07?

Check out more from her editorial, after the jump...