Actresses/ fashion designers Mary-Kate and Ashley Olsen have been named VOGUE magazine’s best dressed sisters for the mag’s 2011 Best Dressed issue. Other favorite best dressed siblings featured in the issue includes Beyonce and Solange Knowles, Kate and Pippa Middleton, Courtins-Clarins girls – Claire and Virginie, who set flashbulbs ablaze whenever they show up for fashion week, Kate and Rooney Mara, younger actors Dakota and Elle Fanning, models Poppy and Cara Delevigne and others.

Check out Vogue.com to check out the mag’s full gallery and to vote for your favorites!