Star Tracks: Thursday, March 29, 2012

Katharine McPhee receives a playful checkup Wednesday during a visit in Accra, Ghana, where the Smash star joined forces with Malaria No More, an organization dedicated to ending malaria deaths in Africa.

Nick Lachey and his expectant wife Vanessa enjoy a romantic stroll Thursday in Australia.

Mom-to-be Reese Witherspoon keeps her baby bump covered while flashing her movie star grin in Brentwood, Calif., on Wednesday.

Parting is such sweet sorrow! Gwen Stefani keeps it moving Wednesday while heading to a Santa Monica, Calif., recording studio.

All together now! Nicole Kidman and Keith Urban make their way through an airport in Sydney, Australia, with daughters Sunday, 3, and Faith, 15 months, on Wednesday.

Kellan Lutz proves he's a jack-of-all-trades, taking his car trouble into his own hands Wednesday in Los Angeles.

New aunty Solange Knowles let's the music play while working the DJ booth Wednesday during a party, held at a Stuart Weitzman boutique in New York.

A beaming January Jones leaves son Xander at home for a lunch date in Los Feliz, Calif., on Wednesday.

Mom-to-be Jessica Simpson juggles some new loot Wednesday while shopping in Santa Monica, Calif.

Another proud mom clutching her purse is Bethenny Frankel, who heads out in style in New York's Tribeca neighborhood on Wednesday.

AnnaSophia Robb trades stilettos for a sequined dress Wednesday while shooting scenes for The Carrie Diaries, in which she portrays a young Carrie Bradshaw, in New York.

She's a mommy's girl! Meg Ryan spends some one-on-one time with daughter Daisy, 7, during a rain shower in New York City on Wednesday.

Why so serious? The Dark Knight Rises's Joseph Gordon-Levitt keeps his focus for a walk around L.A. Wednesday.

Following a day date with boyfriend Andrew Garfield, Emma Stone steps out solo in N.Y.C. Wednesday, keeping company with her tunes.

Say cheese! Hilary Swank strikes a pose next to the Mona Lisa Tuesday while attending a dinner hosted by Salvatore Ferragmo in honor of a new Leonardo da Vinci exhibit at the Louvre Museum in Paris.