Ashlee Simpson and Nicky Hilton were both dressed in Alice + Olivia for a charitable party thrown by the line's designer Stacey Bendet at the Soho House in LA last night. Ashlee has been stepping out at fashionable soirees in recent months in both NYC and LA, but she seems to be staying put with Bronx and Pete in California now that the holidays are approaching. The Simpson family has a lot to celebrate this season, including Jessica's exciting engagement to Eric Johnson and the huge success of the Jessica Simpson Collection. Ashlee and the rest of the family will add Eric to their Christmas lists this year and if you're looking for suggestions on what to give your own sibling's significant other, be sure to check out our holiday gift guide for our editors' picks!