Nicole Richie hanging out at Chicago's Sunda with entrepreneur (and the restaurant's owner) Billy Dec (she also tried Lou Malnati's pizza during her trip to the Windy City!).
Jessica Biel having a girls night out at LGO in Santa Monica, CA.
Nick Lachey and his brother Drew supporting Matt Leinart's charity for disadvantaged youth at W Scottsdale.
Avril Lavigne and her boyfriend Brody Jenner closing out Katsuya in Brentwood for a late night dinner and wine.
Hugh Hefner celebrating his 84th birthday at the Palms Casino Resort in Las Vegas.
Kate Gosselin and her bodyguard Steve Neild having dinner together at RockSugar Pan Asian Kitchen in L.A.
Pharrell singing Happy Birthday to a friend at Stanton Social in NYC.
Kate Hudson toasting to Barbie's makeover with TY KU sake at a private party in Miami Beach.
Chris Brown cheering on boxer Andre Berto as he fought against Carlos Quintana at the Fighting for Haiti match in Sunrise, Florida.
Jake Owen stopping to say hi to country group Lady Antebellum and Colbie Caillat at Taco Mamacita in Nashville.
Anna Kournikova celebrating her cover of Capitol File with friends at Oya in Washington, D.C.
Melanie Griffith buying Babakul Cargo pants and top at Fred Segal Fun in Santa Monica.
Marcia Cross celebrating her birthday with pals at Venus Pool Club and Pure Nightclub in Las Vegas.
Nikki Reed checking out condos at Evo luxury residences in downtown L.A.
Ne-Yo throwing an old-fashioned dance-off at Guys and Dolls nightclub in West Hollywood.