Did Blake Look Better In Sienna's Twenty8Twelve Dress?

When it comes to gorgeous-ness, Sienna Miller and Blake Lively are seriously neck and neck. But last night, Ms. Van Der Woodsen was spotted wearing a skintight Twenty8Twelve navy fitted frock on Gossip Girl, which Sienna Miller also happened to rock in the line's lookbook, and we can't help but ask: Who wore it better? This particular dress-off features the Vacarro Dress, $420, from Savannah and Sienna Miller's Fall 2010 collection, so feel free to go out to your local Nordstroms to throw your hat in the ring, or just simply tell us who you think wore this second-skin sheath better than the other.
Photos from Splash News.

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