Celebrity Star Tracks - Wednesday, August 15, 2007 By People Staff Published on August 15, 2007 05:00 PM Share Tweet Pin Email Trending Videos 01 of 15 GREAT EXPECTATIONS 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. 02 of 15 MAKING HER MARK Alexandra Wyman/WireImage 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. 03 of 15 HOMECOMING KING Steve Granitz/WireImage 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. 04 of 15 PROUD PAPA Sara Jaye Weiss/startraks 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. 05 of 15 INTO THE BLUE REZZA-LAFATA/MATRIX 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. 06 of 15 CYCLING IN THE CITY Anthony Dixon/WENN Natalie Portman has some two-wheelin' fun on a retro bike as she films a fashion commercial on the streets of Manhattan on Tuesday. 07 of 15 PICK-UP SPORT Bauer-Griffin 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. 08 of 15 OUT TO LUNCH Tres/WENN 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. 09 of 15 DRIVE-THRU SERVICE Team Beckham/Splash News Online 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). 10 of 15 PINK LADY Flynet 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. 11 of 15 CONTINUING EDUCATION Team Beckham/Splash News Online 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. 12 of 15 SPEAKING IN TONGUES Flynet 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. 13 of 15 DEARLY BELOVED INF 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. 14 of 15 COMMON GROUND INF 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. 15 of 15 MELLOW YELLOW Flynet 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. More on Jessica:See the latest photos, news and a full bio