Lopez takes a chic stroll in the French city. Plus: Mariah & Nick, Tom & Katie and Taylor Momsen

DISCO QUEEN

She's got disco fever! Decked out in 1970s attire, Prince William's longtime girlfriend Kate Middleton is ready to boogie-oogie-oogie for charity as she arrives Wednesday to the Day-Glo Midnight Roller Disco, a fund-raising event she hosted at London's Renaissance Rooms club to aid the Children's Hospital in Oxford, England.