Star Tracks: Thursday, August 16, 2012

01 of 15

MAKE WAVE

Rihanna marks her arrival in Tokyo with a friendly gesture on Thursday, where she is slated to perform at the Summer Sonic music festival this weekend.

02 of 15

PINK LADY

After a date with her new man, Jennie Garth steps out solo for the LOFT Pink party on Wednesday, which supported the Breast Cancer Research Foundation, in West Hollywood.

03 of 15

SKIP A BEAT

Showing off his love for fitness, Matthew McConaughey jumps rope at the kick-off of PampG's GIVE Education campaign Wednesday in Venice, Calif.

04 of 15

CAT'S MEOW

Spotted: Heidi Klum sits prettily at the unveiling of her Truly Scrumptious clothing collection at Babies "R" Us in New York City on Wednesday.

05 of 15

PLAYING DOUBLES

Salma Hayek and hubby François-Henri Pinault enjoy a night out to celebrate Halle Berry's (not pictured) 46th birthday Wednesday in Los Angeles.

06 of 15

RIGHT ON 'TIMES'

Following an appearance on Good Morning America, Robert Pattinson continues his Cosmopolis promo tour with a stop at The New York Times's Times Talks interview series Wednesday in New York.

07 of 15

IN THE DOOR

Jon Hamm leads the way for girlfriend Jennifer Westfeldt on Wednesday as the couple arrives at Los Angeles International Airport.

08 of 15

FROCK OUT

Rachel Bilson sports a summery dress and a smile for a lunch date in Los Feliz, Calif., on Wednesday.

09 of 15

BIRTHDAY TREAT

After getting pampered, Jennifer Lawrence rings in her 22nd birthday with a shopping trip Wednesday in Santa Monica, Calif.

10 of 15

RISE & SHINE

Jennifer Garner gets animated while chatting about her latest project, The Odd Life of Timothy Green, during a Wednesday visit to Good Morning America in New York's Times Square.

11 of 15

LONDON CALLING

Chris Hemsworth keeps it casual for a mobile phone chat around London's Notting Hill neighborhood Wednesday.

12 of 15

DOLCE DUO

Another day, another Italian adventure! George Clooney and Stacy Keibler stay by each other's sides Wednesday during a boat ride in Venice.

13 of 15

ONE TREE HILL

Emmy Rossum finds shade – and a pretty place to sit – during a trip to a Beverly Hills park Wednesday.

14 of 15

WRITE STUFF

So swaggy! Nick Cannon lets his shirt do the talking during a visit to SiriusXM's New York studios Wednesday.

15 of 15

LOVE SEAT

Kevin Jonas and wife Danielle flash their camera-ready smiles Wednesday after chatting with Young Hollywood in Los Angeles, where they promoted their upcoming E! reality show, Married to Jonas (premiering Aug. 19).