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Hilary Duff was joking with sister Haylie about bringing a baby boy into a family dominated by women. The sisters were hanging out at a party for stylist Jessica Paster’s JustFabulous collection at a private house in the Hollywood Hills. Joining them for the sit-down dinner party (which was co-hosted by Emily Blunt): Duff’s hubby, Mike Comrie. The evening also took on a holiday theme as guests swilled champagne and huddled around a Christmas tree, where Jessica gave out gifts from her new line. – Jessica Wedemeyer

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