Paris Hilton had another crazy day today. This week, actually, has been pretty busy for the heiress. Paris first celebrated her mom Kathy’s birthday with sister Nicky Hilton at the Orso restaurant. Then it was off to promote boyfriend Benji Madden and twin brother Joel Madden’s new clothing line DMCA. BFF Nicole Richie was in attendance.

But even before the promotional grand opening of the twin’s store, Paris and sister Nicky went to the Scandinavian Style Mansion to promote Paris’s new handbag collection. Lindsay Lohan was also in attendance, but reportedly threw a fit when she found out that the backdrop to the red carpet had Paris’s name plastered all over it.