This week kicked off with fashion mania at the Costume Gala, where our favorite couples, like Tom and Katie and Gisele and Tom, lit up the red carpet. Then attention shifted to the budding romance between Rihanna and Chris — not to mention our first look at Nick Cannon after his whirlwind wedding to Mariah. Were you paying attention to everything else that went down?

Pop Quiz, Hot Shot: Week of 5/4/08

In which German city did Ashlee Simpson, Pete Wentz and Wentworth Miller attend the Bravo Supershow last weekend?