Blake Lively
The only thing that would make this sighting of the Gossip Girl star better would be if her boyfriend Leonardo DiCaprio were by her side. Too bad he's Down Under shooting a movie!
Amanda Seyfried
A little tennis plus a little bubbly at the U.S. Open—we can't think of a better way to spend a holiday weekend.
Brooklyn Decker
Tennis star Andy Roddick's No. 1 fan cheers on her husband at the U.S. Open in Flushing Meadow, N.Y.
Alexander Skarsgard
True Blood's hunky vampire sinks his teeth into a good tennis match at the U.S. Open.
Alec Baldwin
The 30 Rock star and longtime tennis fan debuted his new girlfriend at a U.S. Open event. Now that's a love match!
Kate Middleton & Prince William
Woo-hoo, seats in the Royal Box! The royal couple look smashing as they take their seats at Wimbledon.
Cory Monteith
The Glee star and rabid fan of his hometown Vancouver Canucks visits the set of the NHL Network's NHL Live program inside the NHL Powered by Reebok store in NYC. Maybe there's a future in sports broadcasting for the actor if this musical craze ever dies down?
David, Victoria, Cruz & Romeo Beckham
Soccer isn't the only sport this family loves, as they take in the Kings vs. Sharks NHL playoff game in Los Angeles. After baby No. 4 arrives, the Beckhams will be just two kids short of creating their own hockey team!
Aretha Franklin
Who knew the Queen of Soul was a basketball fan? Franklin has rebounded nicely from a health scare earlier this year, hanging courtside at the Knicks-Magic game at Madison Square Garden—where she received a standing ovation just because!
Matthew Morrison, Chord Overstreet, Harry Shum Jr., Heather Morris & Cory Monteith
The Glee gang support the jocks for a change, watching the Vancouver Canucks defeat the L.A. Kings 3-1 at the Staples Center. At least one fan wasn't disappointed by the hometown team's loss: Vancouver native Cory!
Charlize Theron
The Oscar winner has a monster of a good time watching the U.S. Open Men's Finals with her mom.
Ashlee Simpson-Wentz
It's a girls' day out, as Ash whoops it up at the U.S. Open with pal Cameron Diaz (not pictured).
Gavin Rossdale & Gwen Stefani
The musical duo enjoys the Federer vs. Melzer match at the U.S. Open's day eight.
Usher
The singer ushers himself to his seat during day three of the U.S. Open.
Kim Kardashian & Kris Jenner
With a little assistance from mom, the E! reality star satisfies her need for speed by taking to the track at the Indianapolis Motor Speedway.
Mark Wahlberg
It's safety first for the actor as he prepares to ride shotgun with driver Michael Andretti prior to the Indy 500.
Jack Nicholson
Hmm, is waving the green flag at the Indianapolis 500 on the movie legend's bucket list?
Holly Madison
It may not be a regulation issue uniform, but we're pretty sure the fans at this Las Vegas 51s game don't mind the extra skin.
David Duchovny
Much to the delight of his wife, Téa Leoni, and their kids, the Californication star mixes it up with the Harlem Globetrotters after being pulled onto the court for a little midgame fun at New York's Madison Square Garden.
Pete Wentz & Ashlee Simpson-Wentz
Given how happy these two seem to be while sitting courtside during the Knicks-Wizards game at Madison Square Garden, you would think son Bronx was playing.
Chloë Sevigny
The Big Love star shows the home team a little, well, love, while kicking back a brew at a New York Knicks game.
Rob Lowe & Taylor Lautner
Two generations of teen idoldom come together as one to cheer on the Super Bowl-bound Colts in Indianapolis.
January Jones & Jeremy Piven
Game? What game? You might say we got a little bit distracted during the Saints-Vikings matchup in New Orleans upon seeing the Mad Men star included in the actor's entourage.
Audrina Patridge
Racers in NASCAR's Sprint Cup Series Pepsi 500 rev their engines for the "HOT" reality star at the Auto Club Speedway in Fontana, Calif.