Star Tracks: Monday, June 17, 2013

Round three! Mom-to-be Jessica Simpson once again makes her way down the aisle – as a bridesmaid! – for a pal's Saturday wedding in San Diego.

Another day, another World War Z appearance for Brad Pitt, who brings his promotional tour stateside on Monday for a chat on Good Morning America in New York City.

Taylor Swift hits all the right notes with her body-hugging (jaw-dropping!) bandage dress in Toronto for Sunday's MuchMusic Video Awards.

Hold your horses, boys! Princes William and Harry put their polo skills on display on Sunday (a day after their appearance at Queen Elizabeth's birthday parade) while playing in a charity match at the Beaufort Polo Club in Gloucestershire, England.

Two Houghs are even better than one! Brother-and-sister dancing pros Derek and Julianne display matching smiles and sunglasses as they arrive for a Sunday flight at LAX.

Life's a gas for Glee's Cory Monteith, who gets pumped up at a station in L.A. on Sunday.

Also at Sunday's MuchMusic Video Awards: Demi Lovato, who mans the mic on the Toronto stage.

Thandie Newton gets cheeky with Kerry Washington at Sunday's kick-off party for the Jimmy Choo and Esquire London men's collections at Loulou's, a city hotspot.

Friendly exes Kate Beckinsale and Michael Sheen (left) celebrate Father's Day in Santa Monica, Calif., on Sunday with their 14-year-old daughter Lily and the actress's current hubby, Len Wiseman.

Back in N.Y.C. after a Malibu vacation, Liev Schreiber continues to take it easy (while remaining easy on the eyes) on Sunday.

How's that for giving the shirt off your back! Recently retired soccer superstar David Beckham hands off a signed jersey to sports administrator Cai Zhenhua Monday at a Beijing, China, ceremony.

Whitney Port gets set to spin on Saturday during a charity ride at L.A.'s AuraCycle, where she raised money for the Uro Ongcology Research Program Fund at Cedars-Sinai Medical Center in memory of her father, who passed away from kidney cancer in March.

Hilary Duff keeps her hands full between 14-month-old son Luca and a chilly beverage on a Saturday outing in Beverly Hills.

Aloha, Jessica! Chastain makes a colorful statement Saturday at the Maui Film Festival in Wailea, Hawaii.

The couple who works out together stays together! Heidi Klum and beau Martin Kirsten get physical around N.Y.C. on Saturday.

It's a girls' day out for Jessica Biel and her beloved pit bull Tina, who leads the way through N.Y.C. on Saturday.

Rooney Mara keeps an eye on Casey Affleck at the Los Angeles Film Festival, where they promoted their film Ain't Them Bodies Saints on Saturday.

Jessica Alba holds tight to all her must-haves – two big bags and 5-year-old daughter Honor's hand – while out and about in L.A. Friday.

Selena Gomez, whose mother recently welcomed a baby girl, shows off her flowery side in Tarzana, Calif., Friday.

Miranda Kerr's adorable yellow handbag adds a punch of color to her outfit as she arrives Friday at JFK airport in New York City.

After surviving a wardrobe malfunction earlier this week, a gym-ready Reese Witherspoon gets ready for a workout Friday in Brentwood, Calif.

Paul Rudd gives darling daughter Darby, 3, a bird's eye view of New York City during a family outing on Friday.

Take two? Fresh off her glam night at the amfAR Inspiration Gala, a quizzical Jennifer Lopez thinks pink while filming in New York City on Friday.

Adam Levine trades the Voice stage for a concert stage Friday, joining his Maroon 5 bandmates for an early-morning performance on Today in New York's Rockefeller Center.

Arrested Development's Jason Bateman gets into a hairy situation Friday while checking out the street scene in N.Y.C.'s Tribeca neighborhood.

Not looking particularly Glee-ful after announcing her split from wife Lara Embry earlier in the week, Jane Lynch steps out Friday afternoon in New York City, where she's starring in Broadway's Annie: The Musical.