Star Tracks: Monday, June 21, 2010

Start your engines! Gerard Butler takes his Harley for a leisurely spin Saturday in Los Angeles.

Nicole Kidman and Sunday Rose, 23 months, touch down at LAX Sunday, just in time to celebrate Father's Day with husband Keith Urban and the actress' 43rd birthday.

What drama? Miley Cyrus tops the 21st Annual MuchMusic Video Awards Sunday, co-hosting the show, performing twice and walking away with the award for International Video of the Year for "Party in the USA."

Continuing their, Princes William and Harry put their dukes up for David Beckham at a reception for FIFA officials in Johannesburg, South Africa. The dapper countrymen joined forces Saturday to support England's bid to host the 2018 World Cup.

Katy Perry arrives at the MuchMusic Awards Sunday in a sweet ride – an ice cream truck! While she didn't go home with an award, the singer did treat fans to a performance of her summer anthem, "California Gurls."

Something fruity? Jennifer Garner takes daughters Violet and Seraphina to a farmer's market in California Sunday.

During rehearsals for the MuchMusic Video Awards, Ke$ha puts a spin on her hit song "Tik Tok." The show, featuring Miley Cyrus and Justin Bieber, took place Sunday night in Toronto.

Berlin is always bright when you're a star. Taylor Lautner – there doing Eclipse press with Kristen Stewart – was greeted by fans outside restaurant Zillemarkt.

His own "karate kid" (son Michael) in tow, Mark Wahlberg spends some time with his wife Rhea Durham and daughter Ella, walking through Brentwood, Calif., over Father's Day weekend.

Katy Perry shows some skin – and her diamond engagement ring! – during a visit to Toronto's ETalk Studios on Friday. The singer is busy promoting her No. 1 single, "California Gurls."

Rihanna tests the water at a pool in her native Barbados on Thursday. The singer returned home this week after a lengthy European tour.

The Jersey Shore cast gets fangtastic while spoofing scenes from Twilight. (Check out the usually supertan Mike "The Situation" Sorrentino as pale vamp Edward Cullen!) The skit is set to air during Jimmy Kimmel Live's Twilight Saga: Total Eclipse of the Heart on June 23.

Gaga into Dressdown Friday? As if! Sporting a double-breasted suit jacket and slicked-back locks, the Lady continues channeling Madonna circa "Express Yourself" for a lunch in New York City.

Kate Hudson plays the part of a true New York City girl – iced coffee in one hand, Blackberry in the other – while walking the streets of the West Village on Friday.

Matthew McConaughey promotes Dolce amp Gabbana cologne The One at Milan department store La Rinascente Friday. The actor is the face of the scent's ad campaign.

Queen Latifah joins Mary J. Blige at New York restaurant Cipriani Wall Street Thursday, where the stars celebrated "MJB Honors Women Week" in support of The Foundation for the Advancement of Women Now, Inc.