Sienna Miller's New Vogue Cover Is Seriously Stunning

Sienna Miller, at first mention, might not seem like the most obvious choice to open a new year of Vogue covers. But once you get a good look at the striking image of the actor, captured by the legendary Mario Testino, all second-guessing is out the window. 

Miller, who is in the magazine to promote a long string of films she has coming out early next year, is decked out in shades of blue on the cover, from a richly royal Eugenia Kim hat to a vibrant and springy turquoise trench from Burberry Prorsum. In the issue, Miller talks about everything from her aversion to social media ("Instagram fuels the worst part of my soul") to her style steps and missteps.

Check out the gorgeous cover above, then head to Vogue to see more of the stunning images and read the full interview with Sienna Miller!