Star Tracks: Tuesday, September 21, 2010

01 of 15

WHAT A GEM!

Halle Berry sizzles in a peekaboo black dress at the Swarovski Elements' 22 Ways to Say Black charity auction in N.Y.C. Monday.

02 of 15

ART LOVERS

They're cozy! Kate Winslet shares an intimate moment with model boyfriend Louis Dowler on Monday at Vanity Fair's Mario Testino photo exhibition in Madrid, Spain.

03 of 15

WHITE HOT

She comes in peace! U.N. Environmental Ambassador Gisele Bündchen spreads her sweet message Monday night at the United Nations MDG Summit kickoff party at New York's Museum of Natural History.

04 of 15

SCOUT'S HONOR

He's a man with a plan! A casually cool Tom Cruise strolls the streets of Prague on Tuesday to reportedly scout locations for the fourth installment of Mission: Impossible.

05 of 15

DOUBLE PARKING

While Angelina spends time with the kids, Brad Pitt slips into the driver's seat Monday on the L.A. set of Moneyball.

06 of 15

SPOUSAL SUPPORT

Catherine Zeta-Jones gives husband Michael Douglas a shoulder to lean on Monday at the N.Y.C. premiere of Wall Street: Money Never Sleeps. "Cancer picked the wrong guy when it picked [him]," costar Shia LaBeouf told PEOPLE at the event.

07 of 15

RALLYING CRY

Lady Gaga exercises her First Amendment rights Monday in Portland, Maine, rallying to overturn the military's "Don't Ask, Don't Tell" policy banning openly gay people from serving in the armed forces.

08 of 15

MAKE A MOVE

He may have tied for last place – but David Hasselhoff and partner Kym Johnson keep things celebratory at Dancing with the Stars's season 11 premiere Monday in L.A.

09 of 15

'BLAKE' TIE

Seamlessly transitioning from big-screen premieres to small-screen flings, Blake Lively returns to N.Y.C. to film scenes for Gossip Girl alongside dapper costar – and Mad Men hunk! – Sam Page.

10 of 15

BIG BOOTIES

Which is longer, the hair or the boots? After glamming it up in Paris, a newly single Kim Kardashian goes to great lengths on Monday while shoe shopping at the Cesare Paciotti boutique in Milan.

11 of 15

MONEY SHOT

Now that's a "stock" photo! The stars of Wall Street: Money Never Sleeps Shia LaBeouf, Josh Brolin and Carey Mulligan look like a million bucks while ringing the NASDAQ Opening Bell in N.Y.C. on Monday.

12 of 15

'MODERN' WOMAN

Modern Family star Sofia Vergara shows off her ferocious side – in a sexy leather and leopard ensemble! – while stopping in the Big Apple on Monday. Her Emmy-winning comedy returns to ABC on Wednesday.

13 of 15

AWARD-WORTHY GRIN

After showing she's got a leg up on the competition, Julia Roberts flashes her winning smile while accepting the Premio Donostia lifetime achievement award at Spain's San Sebastién Film Festival on Monday.

14 of 15

RULE OF THUMB

Claire Danes gives a major thumbs-up while unveiling a philanthropic work of art – a mosaic of three million thumbprints from worldwide supporters of Save the Children's EVERY ONE campaign – at New York's Grand Central Terminal on Monday.

15 of 15

FOND FAREWELL

Sarah Jessica Parker pays tribute to her late friend Alexander McQueen on Monday, attending a memorial service for the designer in London.