Posted on Fri Oct 29th, 2010 2:55pm PDT By X17 Staff
Rachel Bilson went to a local party store in Hollywood this morning to gather up some last minute Halloween supplies, but the black plastic bag blocked us from getting a peek at her costume and spooky decorations. Rachel doesn't exactly seem like the partying type when it comes to costumes ... our guess is she's helping her adorable little sister Hattie put on some sort of production!
SEE THE GALLERY Rachel Bilson Prepares For A Halloween Party
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