Jay-Z Parties With Solange Knowles in NYC

Jay Z at the D’USSE Cognac launch party at the Top of the Standard in NYC.  Patrick McMullan

Jay-Z partying with sister-in-law Solange Knowles at the D'USSE Cognac launch party at the Top of the Standard in NYC.

Karina Smirnoff taking a break from rehearsal and enjoying a Clearly Kombucha on the Dancing with the Stars set in L.A.

Kate Upton dining with three pals in the wine room at Prime 112 in Miami Beach.

Ice-T and Coco sipping POM Juleps at the Style Icon Lounge by New Era in Louisville, Kentucky.

Pitbull drinking Voli LIGHT cocktails at 1OAK Nightclub at The Mirage Resort & Casino in Las Vegas.

Maksim and Valentin Chmerkovskiy hanging out with Mark Ballas, William Levy, Derek Hough and Katherine Jenkins at Playhouse Nightclub in Hollywood.

Josh Groban and Gerard Butler leading a special rendition of Happy Birthday for rock-jazz pianist ELEW at a private party produced by Oliver Evans of the Scene Network in NYC.

Sofia Vergara attending the annual Spirit of Achievement Awards Luncheon honoring friend and jeweler Lorraine Schwartz, hosted by the National Women's Division of the Albert Einstein College of Medicine, in NYC.

Chris Brown buying over $10,000 in Cristal and Ace of Spades champagne during a birthday party for his girlfriend Karrueche Tran at Greystone Manor in L.A.

Halle Berry enjoying some Mother's Day french toast with daughter Nahla and fiance Olivier Martinez at Fig & Olive Melrose Place in L.A.

Susan Sarandon downing a glass of Macallan whiskey with friends at Café Fiorello in NYC.

Topher Grace, Robert De Niro and other actors from Lonely, I'm Not enjoying some quality cast time and mini-burgers at the Heartland Brewery in NYC.

Rihanna dancing up a storm with girlfriends during Silver Medallion's set at Greenhouse in NYC.

The Biggest Loser's Bob Harper celebrating the launch of his new book, The Skinny Rules, at Santa Maria Novella in NYC.

Kelly Rowland dining on soft shell crab and sweet corn at Zuma in Miami.

Kelly Bensimon swimming with a group of stingrays at Stingray City in the Cayman Islands.

Amy Smart and Lauren Conrad donating their own trash for the creation of art pieces that were auctioned to benefit Keep America Beautiful presented by Glad.

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