This year, we saw celebs, major designers, and favorite labels hitting department stores and chains in the form of fashionable collaborations. Among the standouts of 2010, Madonna brought her Material Girl to Macy's, Mulberry's classic handbags headed to Target, and Alexa Chung created a signature style line for Madewell. But that was hardly the end of it; closing out the year, Valentino brought its femme confections to Gap, and Lanvin for H&M took the fashion world by storm. Each crush-worthy collab delivered new looks to love, but it's time to cast your vote for the one that made you go gaga — what's the best fashion collaboration of the year?
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