Star Tracks: Wednesday, March 20, 2013

01 of 15

CARRY ON

Sienna Miller keeps daughter Marlowe, 8 months, close during some girls-only shopping in New York's SoHo neighborhood on Tuesday.

02 of 15

LESSON IN CONTRASTS

Mom-to-be Kim Kardashian and good friend LaLa Vasquez opt for opposite colors for their Tuesday dinner date in Beverly Hills.

03 of 15

GOOD GAMERS

On Late Night with Jimmy Fallon in New York Tuesday night, Selena Gomez joins forces with her musically inclined host for a sweet duet about none other than the Nintendo video game Mario Kart.

04 of 15

WHAT A SIGHT!

Longtime lovebirds Diane Kruger and Joshua Jackson see eye-to-eye Tuesday at the Los Angeles premiere of her new film, The Host, at the ArcLight Hollywood Theater.

05 of 15

BENCHED

The play's the thing as Mark Wahlberg and 4-year-old son Brendan watch football practice Tuesday in a Beverly Hills park.

06 of 15

HEAD START

That's going to leave a mark! Gerard Butler gamely autographs a fan's forehead on Tuesday before making an appearance on Jimmy Kimmel Live in Hollywood to promote his new movie, Olympus Has Fallen.

07 of 15

LISTEN CLOSE

Catherine, Duchess of Cambridge gets an earful while tapping into her maternal instincts at the charity headquarters of Child Bereavement UK, which aids children who have recently lost a parent, in Saunderton, England.

08 of 15

AB-SOLUTELY

Following the Dancing with the Stars season 16 premiere, pro Karina Smirnoff, who's partnered with Super Bowl champ Jacoby Jones, shows off her fine form Tuesday on the show's L.A. set.

09 of 15

BODY OF WORK

David Beckham keeps his own bod quite covered Tuesday while promoting his HampM bodywear line in Berlin, Germany.

10 of 15

DRINK TO THAT

Britney Spears puts her rumored romance with David Lucado on ice – literally – with a Tuesday beverage run in Calabasas, Calif.

11 of 15

MORNING RUSH

Come on, mom! Alyson Hannigan keeps a watchful eye on daughter Satyana – who turns 4 on March 24 – while headed to school Tuesday morning in Santa Monica, Calif.

12 of 15

TWO FOR THE ROAD

Ben Affleck doubles up on hot beverages during a coffee run in Brentwood, Calif., on Tuesday.

13 of 15

TAKE A HIKE

Back from her Bikini Boot Camp, a black-clad Cameron Diaz savors the great outdoors during a hike Tuesday in Los Angeles.

14 of 15

LOCATION SCOUT

A bespectacled Clive Owen checks out the scene while shooting his new film, Words and Pictures, on location in Vancouver, Canada, on Tuesday.

15 of 15

IN A 'TRANCE'

Rosario Dawson nearly blends in with the red carpet – thank goodness for all that glitter on her Jenny Packham dress! – at the London premiere of her film Trance on Tuesday.