Star Tracks: Tuesday, July 19, 2011

01 of 15

GAM ON!

GAM ON!
Fame

Move over, Lady Gaga! Rihanna makes her own pantless fashion statement on Monday, beating the New York City heat with some shirty behavior.

02 of 15

BUDDY SYSTEM

BUDDY SYSTEM
Jamie McCarthy/WireImage

Flirty costars – and future Marine Corps Ball matesJustin Timberlake and Mila Kunis have a close encounter on Monday at the New York City premiere of their July 22 movie, Friends with Benefits.

03 of 15

SUNNY SMILE

SUNNY SMILE
Fame

Just over a week after welcoming baby boy Bing into the world, new mom Kate Hudson enjoys a sandy afternoon in Malibu, Calif., with her other main men, son Ryder, 7, and fiancé Matthew Bellamy (not pictured), on Monday.

04 of 15

ON THE MARKET

ON THE MARKET
X17

After a family trip to the farmer's market over the weekend, Jennifer Garner spends a little one-on-one time with 2-year-old daughter Seraphina at the Brentwood Country Mart in Brentwood, Calif., on Monday.

05 of 15

MEET THE PREZ

MEET THE PREZ
Gaz Shirley/Kevin Perkins/Pacific Coast News

Talk about a monumental meeting! Shenae Grimes gets a hands-on history lesson Monday, cozying up to a replica of the iconic Lincoln Memorial while on location for 90210 in Brentwood, Calif. a

06 of 15

SHORTS STROLL

SHORTS STROLL
London Entertainment/Splash News Online

A cutoffs-clad Halle Berry stays in step with adorable daughter Nahla, 3, during a Monday afternoon out in Santa Monica, Calif.

07 of 15

URBAN 'COWBOYS'

URBAN 'COWBOYS'
James Devaney/WireImage

Hi-ho Letter-ford, away! In N.Y.C. to promote his July 29 movie Cowboys amp Aliens, Harrison Ford horses around with Late Show host David Letterman outside the Ed Sullivan Theater on Monday.

08 of 15

SHADY BEHAVIOR

SHADY BEHAVIOR
Fame

Occasional wedding-crasher Justin Bieber enjoys a sunny solo adventure on Monday in Los Angeles.

09 of 15

SHORT & SWEET

SHORT & SWEET
Albert Michael/Startraks

Vanessa Hudgens models a short crop – like the one she sports in her new movie – at Neutrogena's Wave for Change event Monday alongside fellow brand ambassador Hayden Panettiere in L.A.

10 of 15

'ROME'-ANTIC STROLL

'ROME'-ANTIC STROLL
Flynet

Penélope Cruz shows her stripes with hubby Javier Bardem on the set of her latest collaboration with Woody Allen, Bop Decameron, in Rome, Italy, on Monday.

11 of 15

STRING THEORY

WHITNEY PORT
INF

Someone's raising the Miami heat index! Whitney Port makes a bikini adjustment while emerging from the surf in Miami Beach on Monday.

12 of 15

IN A 'DASH'

IN A 'DASH'
Freddie Baez/Startraks

Bride-to-be Kim Kardashian shops close to home Monday at her very own DASH boutique in New York's Soho neighborhood.

13 of 15

BAG OF TRICKS

BAG OF TRICKS
Doug Meszler/Splash News Online

Ditching her panda instincts, Lady Gaga gets all laced up Monday for her radio interview with Howard Stern in New York City.

14 of 15

FOOD RUN

FOOD RUN
Flynet

Following her royal encounter with Duchess Catherine, Reese Witherspoon keeps it simply chic in an LBD during a lunch date in Brentwood, Calif., on Monday.

15 of 15

FRENCH DRESSING

FRENCH DRESSING
Eliot Press/Bauer-Griffin

On the lookout for some relaxation? Catherine Zeta-Jones and husband Michael Douglas take in the Mediterranean scenery Monday while vacationing in Saint-Tropez.

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