Star Tracks: Friday, March 9, 2012

01 of 15

RED-Y, SET, GO!

She's back to her roots! Lindsay Lohan beams while modeling her new old hair color Thursday in Los Angeles.

02 of 15

LENDING A HAND

While her children enjoy dog-walking duties, superstar mom Angelina Jolie makes waves at New York's Women in the World summit at Lincoln Center on Thursday.

03 of 15

ENGAGING COUPLE

Here's the proof! After remaining mum about their engagement in January, Jessica Biel flashes her impressive sparkler during a lunch date with fiancé Justin Timberlake at Brentwood, Calif., eatery Tavern.

04 of 15

COZY COUPLE

Kate Hudson stays warm – and caffeinated – Friday while enjoying a romantic stroll with fiancé Matt Bellamy in London.

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SPEAKER OF THE HOUSE

He sure cleans up nice! Texas native Matthew McConaughey brings out his best threads for a Thursday appearance at the Texas Film Hall of Fame awards in Austin.

06 of 15

DOG RUN

Lauren Conrad enjoys a little beachside playtime with a pack of pups during a Thursday photo shoot in Malibu.

07 of 15

THE RIGHT SCRUFF

Transformers star Shia LaBeouf undergoes a transformation of his own Thursday, sporting a full-grown beard and slicked-back hair during a coffee run in L.A.

08 of 15

DAPPER DON

After explaining his Mad Men set injuries, a well-suited Jon Hamm – who celebrates his birthday tomorrow – steps out from his Los Angeles home Thursday.

09 of 15

ARM CANDY

Zac Efron brings the promo trail for The Lorax overseas Thursday, attending a photo call for the animated film in Madrid.

10 of 15

WELL SUITED

Say cheese! Silent House Elizabeth Olsen catches up with Awake star Wilmer Valderrama Thursday while stopping by the SiriusXM Radio studios in New York.

11 of 15

BALANCING ACT

Kristen Bell expertly juggles her drink in one hand and a book in the other while heading out Thursday in Los Feliz, Calif.

12 of 15

READY TO WORK

As the new season of Dancing with the Stars gears up, pro Cheryl Burke arrives to rehearsals Thursday in Miami, Fla.

13 of 15

HAPPY DAY

Basking in New York's warm weather, Demi Lovato flashes a pleasant smile during a visit to Sirius XM Radio Thursday.

14 of 15

ON A MISSION

Juan Sharma/Pacific Coast News

While ex-Katy Perry insists her breakup record isn't about Russell Brand, the funnyman opts for a less polarizing activity – hat-hunting! – picking up this black topper Thursday in New Orleans.

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MATCHY MATCHY

Former Real Housewives of New York star Kelly Bensimon stays coordinated with 11-year-old daughter Thaddeus during an afternoon jog Thursday in New York's Soho district.