In shades and a dark cardigan, Rihanna steps out to a London nightclub. Plus: Katie & Suri, Channing Tatum, Jennifer Aniston and more

GUYS' NIGHT OUT

A newly single Nick Lachey shows his Cincinnati Reds pride on Tuesday night while out with buddies in Los Angeles. Although his ex-wife is also now available, don't expect a reunion: The singer recently revealed that he and Jessica Simpson haven't spoken in nearly two years.