Star Tracks - Wednesday, August 15, 2007

Katharine McPhee has some fun playing pregnant on the Los Angeles set of House Bunny on Tuesday. While she does want children one day, "it's fun to just pretend and look in the mirror," the singer told Entertainment Tonight of wearing the prosthetic belly once worn by Nicole Kidman.

Seventeen magazine cover model Ashlee Simpson makes some lucky girls' day with an autograph session and a meet and greet in Los Angeles on Tuesday.The singer hung out with the back-to-school contest winners during a day of beauty at pal Ken Paves's salon.

After posing for a steamy Rolling Stone cover, Zac Efron gets back to family-friendly entertainment, premiering High School Musical 2 with Mickey and Minnie Mouse at Disneyland in Anaheim, Calif., on Tuesday.

Following a luncheon last week in her honor, Stuff magazine cover girl Ivanka Trump is joined by dad, The Donald, at another celebratory bash Tuesday night at Trump Tower in New York.

Becoming Jane star Anne Hathaway gets a little help from her Italian boyfriend Raffaello Follieri in taking the plunge while the two enjoy a getaway in Portocervo, Italy, on Monday.

Natalie Portman has some two-wheelin' fun on a retro bike as she films a fashion commercial on the streets of Manhattan on Tuesday.

Taking a break from the rock-and-roll scene, Jon Bon Jovi plays hands-on dad during a day at the beach with sons Romeo, 3, and Jacob, 5, in East Hampton, N.Y., on Tuesday.

Postpartum blues? Nah, a beaming Jaime Pressly steps out to lunch with friends in Los Angeles on Tuesday. Up next for the new mom: a trip to the Emmys, where she is nominated for outstanding supporting actress for her work on My Name Is Earl.

Back in L.A. after finally hitting the soccer field on the East Coast, David Beckham proves he really is a good sport Monday as he patiently allows a fan to snap his photo before driving off with 8-year-old son Brooklyn (not pictured).

Christina Aguilera makes a casual entrance, dining at Houston's in Santa Monica on Monday evening. The pop star is slowly making her way back on the L.A. scene after a recent bout with the flu.

Already enrolling the little ones? Proud parents Heidi Klum and Seal leave their brood at home as they pay a visit to UCLA's Westwood campus on Monday.

Eva Longoria, who expressed a desire for her future children to be trilingual, practices her native tongue (or, is that French?) while on an L.A. coffee run with her mother-in-law on Monday.

Hairspray star Amanda Bynes gives a wave to admirers on her way to the CW11 morning show's New York studio on Tuesday to promote her new clothing line, Dear.

Mandy Moore has a meet and greet with fellow musician John Mayer (the two share an album producer) in New York's SoHo neighborhood, where the pair lunched at an outdoor café on Tuesday.

After spending downtime back in her hometown of L.A., Jessica Alba gets wrapped up in picking up where she left off in March – filming her latest movie, The Eye, in Vancouver on Monday.

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