Hannigan Alyson ELLE W

Hannigan Alyson ELLE Wmn Hllywd
Michelle's former "Buffy the Vampire Slayer" co-star, Alyson Hannigan, donned a dress with a retro shape and the always-tricky-to-pull-off horizontal stripes. Jeff Vespa/GettyImages.com - October 18, 2010
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