L.C.'s birthday bash was likely ruined when her on screen real life nemesis, Kristin Cavallari, showed up at Goa nightclub where she was partying with Lo -- the drama!
Also in L.A.: "Fantastic Four" hottie Chris Evans showed his New England pride, Pierce Brosnan exclaimed his love of noodles, and DJ Qualls -- who gave his pick for president ... sorta.
In NYC, everyone flocked to a Marc Jacobs party -- including Helena Christensen, Anne Hathaway, Tommy Hilfiger and Allison Janney.
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