Star Tracks: Friday, November 20, 2009

01 of 15

TO THE BEAT

TO THE BEAT
Kevin Winter/Getty

Jennifer Lopez hits the stage at L.A.'s Nokia Theatre on Thursday in preparation for her big performance on Sunday night's American Music Awards. No word on what she'll sing, but it could be a track off her new album Love?, due out in January.

02 of 15

BELLA'S BOYS

BELLA'S BOYS
Dave Allocca/Startraks

Putting their onscreen animosity aside, New Moon's leading vamp Robert Pattinson and werewolf Taylor Lautner smolder for the cameras at the DampG and Cinema Society-hosted New York screening of their film on Thursday.

03 of 15

HOT TO TROT

HOT TO TROT
Richie Buxo/Splash News Online

Gotcha! After announcing that she was skipping the Victoria's Secret catwalk to host the fashion show this year, Heidi Klum makes a stunning return to the runway during the show Thursday night in New York City, strutting her stuff just six weeks after welcoming daughter Lou.

04 of 15

WHO'S THE MAN!

WHO'S THE MAN!
Jemal Countess/Getty

Diddy steps up to celebrate a V.I.P. – himself! – during his belated 40th birthday bash at New York City's Plaza Hotel on Thursday. The music mogul's star-studded party drew guests including Kim Kardashian, Jay-Z and Martha Stewart.

05 of 15

HEY GOOD LOOKIN'

HEY GOOD LOOKIN'
Bauer-Griffin

Gilles Marini proves why he's one of this year's Sexiest Men Alive, striking an effortlessly je ne sais quoi pose while lounging in Miami on Thursday.

See more of PEOPLE's Sexy Men here!

06 of 15

CALLING THE SHOTS

CALLING THE SHOTS
Noel Vasquez/Getty

Let's go, Lakers! Heroes star Hayden Panettiere roots for the home team Thursday night during a basketball game at L.A.'s Staples Center. The reigning NBA champs beat the Chicago Bulls 108-93.

07 of 15

BOYS' ZONE

BOYS' ZONE
Splash News Online

It's a guys' day out! Matthew McConaughey takes his son Levi, 17 months, out to lunch on Thursday at a Santa Monica, Calif., restaurant.

08 of 15

KARATE KID

KARATE KID
Robyn Beck/AFP/Getty

Watch your back! Stephanie Pratt gets in on the action Thursday while walking the red carpet for the Ninja Assassin premiere at L.A.'s Grauman's Chinese Theatre.

09 of 15

CROWD PLEASER

CROWD PLEASER
Toni Passig/WireImage

With a frenzy of fans following close behind, a casual Tom Cruise keeps the pace while sightseeing in Salzburg, Austria, on Thursday. The movie star is in town to film his new action-comedy, Knight & Day, which also stars Cameron Diaz.

10 of 15

MAKES SCENTS

MAKES SCENTS
PA Photos/Landov

Ah, the sweet smell of success! Mariah Carey is aglow during the launch of her new fragrance, Forever, at London's Dorchester Hotel on Thursday.

11 of 15

MORNING RUSH

MORNING RUSH
GSI Media

Hands-on mom Jessica Alba makes a stylish statement with her acid-washed pencil jeans during a breakfast run Thursday with fashionably dressed daughter Honor, 17 months, in Beverly Hills.

12 of 15

TEAM SPIRIT?

TEAM SPIRIT?
VT/Splash News Online

Is she still rooting for the Cowboys? Jessica Simpson may have split from Tony Romo in July, but the singer still proudly wears his team's sweatshirt during a dressed-down shopping trip Wednesday at a Beverly Hills Williams-Sonoma.

13 of 15

BLIND SPOT

BLIND SPOT
Xposure Photos

Talk about sacrificing for fashion! Victoria Beckham isn't interested in sightseeing, keeping her hat low while leaving her London hotel Thursday.

14 of 15

CITY SLICKER

CITY SLICKER
James Devaney/WireImage

John Mayer dresses for the rainy weather, sporting a chic coat while arriving at New York's Ed Sullivan Theater on Thursday for a taping of The Late Show with David Letterman. The rocker, who just released his latest album Battle Studies, recently played two intimate shows around the Big Apple.

15 of 15

OUT OF THE BLUE

OUT OF THE BLUE
Cam Griffith/Bauer-Griffin

Happy New Moon day! Fresh off his big L.A. premiere, a casual Taylor Lautner takes some time off to shop at a Calvin Klein Collection in New York City.

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