Changing Costumes

(NEW YORK) Lauren Santo Domingo never forgets her friends. Olivier Theyskens designed the wedding gown she wore to her marriage to Andreas Santo Domingo, and the newlywed is now returning the favor by inviting the designer to join her in co-hosting an exclusive after party following the Metropolitan Museum of Art's Costume Institute Ball. The invite-only affair--crashers beware--will be attended by 300 guests. It will take place at the chic eatery Philippe on East 60th Street. There goes the neighborhood!