Star Tracks: Tuesday, January 7, 2014

This is way cooler than any frat party we ever went to! Jimmy Fallon, Gisele Bündchen, Matthew McConaughey and Steve Higgins get ready for a little friendly (and foamy) flip cup competition Monday night during a taping of Late Night in New York City. (Click here to see who won.)

It's ladies' night for costars Jemima Kirke, Lena Dunham, Allison Williams and Zosia Mamet, who let the good times roll at Monday night's season 3 HBO Girls premiere in N.Y.C.

Kim Kardashian puts it all on display during a Monday shopping trip in Los Angeles.

Wrapped up in a cozy fur-trimmed shawl, Jessica Simpson is ready to take on the Big Apple Monday as she arrives solo to New York's JFK Airport prior to a Tuesday appearance on Good Morning America to talk Weight Watchers (looking good, Jess!).

Angelina Jolie knows all the cool places in Australia! On Monday, the star takes her kids, including daughter Vivienne, 5½, to the Luna Park amusement park in Sydney, where she's been busy filming her new movie, Unbroken.

He's got to be the best dressed student on campus! The Duke of Cambridge arrives in a suit and tie for his first day of school on Monday at the University of Cambridge in England, where he'll be studying agricultural management during a 10-week course.

Look out, Robert! Sylvester Stallone shows off his boxing skills on the red carpet with costar De Niro while promoting their new film Grudge Match on Tuesday in Rome.

Get ready for awards season – and to see many more smiles from these three! Best supporting actor winner Jared Leto, best actress winner Cate Blanchett and best actor winner Robert Redford show off their happy faces after taking home awards at the New York Film Critics Circle awards ceremony in Manhattan on Monday.

Johnny, is that you? A mustached Depp goes undercover Monday while filming on the Los Angeles set of Mortdecai.

Low-key Taylor Kitsch pulls his own luggage while arriving at the airport in Los Angeles on Monday.

Olivia Wilde lets her teeny-tiny baby bump lead the way on a Monday outing through Los Angeles.

Bradley Cooper has his hands do the talking at Monday's New York Film Critics Circle awards ceremony, where he accepted honors on behalf of absent American Hustle costar Jennifer Lawrence.

Model Cara Delevingne and Rihanna get their heads in the (basketball) game as the home team Brooklyn Nets best the Atlanta Hawks 91-86 on Monday.

An upbeat Cameron Diaz is on "hi" alert while promoting her new tome, The Body Book, on ABC's Good Morning America in New York City on Monday.

With her snow day behind her, Gisele Bündchen keeps 13-month-old daughter Vivian close (and warmly wrapped!) while out Monday in Boston.

The Legend of Hercules star Kellan Lutz finds his stride during a solo outing Monday in New York's SoHo neighborhood.

A little cold weather can't slow down Bethenny Frankel, who stays on-the-go with daughter Bryn, 3½, in N.Y.C. on Monday.

Nick Cannon talks the talk Monday for a press event at the International Consumer Electronics Show in Las Vegas.