Star Tracks: Thursday, October 7, 2010

01 of 15

A 'NOBLE' EFFORT

A 'NOBLE' EFFORT
Luiz Martinez/Broadimage

Nicole Richie takes a break from signing copies of her second novel, Priceless, to strike a sexy pose Wednesday at a Barnes amp Noble in The Grove in Los Angeles.

02 of 15

WEIRD SCIENCE

WEIRD SCIENCE
Michael Murdock/Splash News Online

Actor-musician Justin Timberlake tries his hand at a new calling Wednesday – science! – during an appearance on Spanish TV show El Hormiguero with Social Network costars Jesse Eisenberg and Andrew Garfield (not pictured) in Madrid.

03 of 15

PATTERN PLAY

PATTERN PLAY
B. Ach/INF

Khloe Kardashian and big sister Kim hit the red carpet in coordinated animal prints Wednesday for The Spin Crowd's season finale party in New York. Also in attendance: NJ Housewife Caroline Manzo, who suggested Kim date one of her sons.

04 of 15

SPY GAMES

SPY GAMES
Peter Kramer/AP

Naomi Watts and Liev Schreiber enjoy a night at the movies during the Cinema Society screening of Watts's fact-based spy drama, Fair Game, at New York's Museum of Modern Art on Wednesday.

05 of 15

CROWD PLEASER

CROWD PLEASER
Florian Seefried/Getty

After visiting Germany earlier in the week, Katy Perry heads to Austria Wednesday, where she performed at Vienna's Arena Wien. "Thank you Vienna, you were a lovely and very chic crowd," she Tweeted.

06 of 15

'OMG' MOMENT

'OMG' MOMENT
Anita Bugge/WireImage

Guten Tag! A shaded Usher greets fans at a photo call in Berlin, Germany, where he promoted his upcoming OMG Tour on Wednesday.

07 of 15

SALES CALL

SALES CALL
INF

Look who's getting a caffeine boost! With her drink in hand, Britney Spears gets ready for a day of shopping in Los Angeles on Wednesday.

08 of 15

RIDE ON

RIDE ON
Anthony Dixon/WENN

You never know who you'll bump into on the MTA! Tyra Banks and Clay Aiken keep each other company Wednesday while taking the subway in New York.

09 of 15

BUST A MOVE

BUST A MOVE
Flynet

Shake it! Reese Witherspoon lets loose Wednesday while listening to music on the Vancouver set of her latest film, This Means War.

10 of 15

COUTURE COUPLE

COUTURE COUPLE
Flynet

Proving there's no better accessory than a dapper date, Rihanna brings boyfriend Matt Kemp to the Miu Miu ready-to-wear show Wednesday during Paris Fashion Week.

11 of 15

HOP TO IT

HOP TO IT
Doug Meszler/Splash News Online

Rachael Ray and husband John Cusimano get in the Halloween spirit Wednesday, dressing as Jessica and Roger Rabbit on the streets of New York for a segment on The Rachael Ray Show.

12 of 15

POOCH'S POSE

POOCH'S POSE
Albert Michael/Startraks

Hold that shot! Blake Lively channels her inner pup-parazzi Wednesday while capturing a furry friend on the set of Gossip Girl in New York.

13 of 15

IN A STRUT

IN A STRUT
Xposure

Victoria Beckham throws business casual out the window on Wednesday, strutting to work in fierce leather and studded platform heels in London.

14 of 15

WHEEL-Y FUN

WHEEL-Y FUN
Mark Sullivan/WireImage

Vroom! Gavin Rossdale joins elementary school students Wednesday for a test run of the new Hot Wheels cars in Los Angeles.

15 of 15

TRUE GLOVE

AVRIL LAVIGNE'S TANK
National Photo Group

What's black, white and checked all over? A gloved-up Brody Jenner and Avril Lavigne, making a monochromatic pair as they head into L.A.'s Premiere nightclub Tuesday night.

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