Perry gets colorful in a bright floral blazer while visiting London's BBC 1 studios. Plus: Kristin Cavallari, Fergie, Anna Paquin & Stephen Moyer and more

B-DAY SERENADE

Performing at a birthday party in New York, Lil' Kim rocks the crowd Tuesday night at hotspot Tenjune in an eye-catching striped bustier, magenta skirt and a patent bowed belt.