Hayden Panettiere Hangs Out in Chicago

 Seth Browarnik/startraksphoto.com

Hayden Panettiere hanging out with tattoo artist Johnny McDevitt at Express Rocks! at the Music Cafe at the Hard Rock Hotel in Chicago.

— Black Eyed Peas frontman Will.I.Am taking over the DJ booth at the Pool After Dark at Harrah’s Resort Atlantic City.

Elisabeth Rohm enjoying ESPA spa treatments at Acqualina Resort & Spa on the Beach in Miami Beach.

Jill Zarin eating two chocolate covered roses at Sugar Factory in Las Vegas.

PHOTOS: Today's top celebrity pics

Brody Jenner sipping a Bud Light at La Brea Studios in L.A.

Jessica Szohr and Ed Westwick watching the Black Keys perform at the TOM Shoes sponsored concert at the Hotel Sax in Chicago.

Gabe Saporta and Shannen Doherty judging a regional competition as part of GQ magazine and Bombay Sapphire's search for the nation's "most inspired" bartender at Trump Soho Hotel's rooftop bar in NYC.

Anthony Mackie chatting with friends at the launch of Marc Ecko's fall collection in New York City.

Kanye West, O'Neal McKnight and Marc Jacobs spending thousands of dollars at the Prada and Adidas stores in NYC.

David Arquette and Neve Campbell grabbing a quick bite at HUB51 before catching the late-night Phoenix concert at House of Blues, Chicago.

M.C. Hammer getting into the DJ booth at the TalentMaven.com launch party at Hudson Terrace in NYC.

Julia Roberts enjoying creme brulee while discussing her new movie with friends at Paris Commune in NYC.

— Green Day bandmembers playing with the new Samsung Galaxy S smartphone during dinner at Sunda in Chicago.

Shania Twain meeting her long-time stylist Frankie Foye at the Hair Rules salon in NYC.

Emma Watson showing off her new pixie haircut at Indochine in NYC.

Karina Smirnoff dancing at the Schick Intuition Plus KISS & Tell Party at Stone Rose in NYC.

Donna Karan chatting with fashion designer Stacy Igel at Super Saturday in Water Mill, NY.

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