Our pals at StyleList point out that 'Gossip Girl' star Blake Lively finds herself in a fashion showdown again. Just last month, Lively -- promoting her critically-acclaimed film 'The Town' -- hit the read carpet in the same Antonia Berardi dress that 'Twilight' star Ashley Greene wore months earlier (albeit in a different hue).

Now Lively and rumple-chic style icon Alexa Chung are playing all matchy-matchy, both stepping out in the exact same Chanel dress.

At least this time Lively can stake claim that she wore the short blue and white Resort 2011 frock first at the July premiere of 'Twelve.'