Star Tracks: Tuesday, November 17, 2009

Halle Berry gets into the rhythm of the city while running errands – and taking a call – in New York Monday afternoon.

After performing songs from her upcoming album, Rated R, at London's Brixton Academy, Rihanna gets the party started with sparklers and champagne at the Mahiki Monday night. The RampB singer's new album, her fourth, hits stores Nov. 23.

Fresh off her own recent concert at London's O2 arena, which featured surprise appearances by husband Jay-Z and Kanye West, Beyoncé parties with pal Rihanna at Mahiki Monday night.

Check out Beyoncé's latest video with [CELEBRITY_LINK!" "" "" "0" ]

Robert Pattinson makes his Twi-hards very, very happy, flashing a smoldering smile outside New Moon's Los Angeles premiere Monday at the Mann Village and Bruin Theaters. While some fans camped out since Thursday for a chance to meet the actor, Pattinson couldn't contain his excitement either, telling reporters, "I don't know how the Beatles felt, but very few human beings could ever get this feeling."

Read all about New Moon – and see more pictures of all the stars!

She declared herself Team Jacob in a recent interview – and Kristen Stewart, in Oscar de la Renta, sure looks good next to costar Taylor Lautner at the New Moon premiere Monday.

Gossip Girl costars Ed Westwick and Sebastian Stan make a dashing duo in color-coordinated Spurr suits at the CFDA/Vogue Fashion Fund Gala at New York's Skylight Studios Monday.

After browsing at Fred Segal in Los Angeles Monday, Ryan Reynolds gets ready to speed away on his classic motorcycle.

John Stamos revels in his big honor while receiving a star on the Hollywood Walk of Fame Monday. The actor dedicated the moment to someone special, tweeting, "Today is for you dad."

Days after celebrating his 37th birthday, Josh Duhamel gets back to work Monday on the Long Island, N.Y., set of his new film The Romantics, which also stars Katie Holmes and Anna Paquin.

Nicole Kidman, who admitted her post-baby body helped her land a role in the upcoming film Nine, keeps her famous figure under wraps during a stroll through New York City on Monday.

Look who's in the red: America Ferrera has a color-coded Monday, snacking on an apple while filming Ugly Betty in a bright overcoat on location in New York City.

Looking good! On hand to kick off the second annual "Mentoring Madness" event, a snazzy Snoop Dogg brings out his best threads for a visit to the New York Stock Exchange, where he rang the opening bell on Monday.

After showing off her Team Edward allegiance, Ashley Tisdale rocks a purple bikini while vacationing in Mexico on Monday.

Actress Carey Mulligan helps her leading man Shia LaBeouf get ready for his close-up Monday on the New York City set of the Wall Street sequel, Money Never Sleeps.

Where's Little J off to? Taylor Momsen goes glam in an Andrew Gn dress on the set of Gossip Girl while shooting scenes at the French Society of Art and Culture in New York City.