Who'd You Rather?

Tennis greats Pete Sampras, 39, Jim Courier, 40, and Andre Agassi, 41, caused a racquet at an event in L.A. on Tuesday.

Television actress Michelle Trachtenberg, 25, and movie star Mila Kunis, 27, both slicked their hair back at the same event in D.C. this weekend.

Keith Urban and John Mayer both performed at a Tiger Woods charity event, Tiger Jam 2011, at the Mandalay Bay Events Center in Las Vegas last night.

Bald musclemen Dwayne "The Rock" Johnson, 38,and Vin Diesel, 43, both star in "Fast Five."

Here's Subway's biggest loser Jared Fogle -- and former Verizon Guy Paul Marcarelli.

Soon-to-be touring partners Nicki Minaj and Britney Spears hung out together at a club in West Hollywood last night.

Here's Prince William's bride-to-be Kate Middleton (left) and her younger sister Pippa Middleton (right).

Former "Hills" actress Audrina Patridge and singer Christina Milian both got close at the same event in L.A. this week.

"Scream" queens Neve Campbell, 37, and Courteney Cox, 46, were all smiles at the horror franchise's latest premiere in L.A. on Monday.

Toni Braxton and her family -- Tamar, Evelyn, Traci, Towanda and Trina -- all showed up to the premiere of their new reality show "Braxton Family Values" in L.A. on Wednesday.

Stringy blondes Nicole Richie, 29, Ashley Olsen, 25, and Emma Roberts, 20, got casual at the same event in Beverly Hills on Tuesday.

Here's shockingly booted off "American Idol" babe Pia Toscano (left) -- and the OG Pia, '80s starlet Pia Zadora back in her heyday (right).

Matt Stone, 39, and his "BASEketball" co-star Trey Parker, 41, shared a little personal space while smiling for cameras in New York city last week.

Former "Dexter" beauty Julie Benz, 38, socialite Tinsley Mortimer, 34,and "Real Housewives of NYC" enigma Kelly Killoren Bensimon, 42, all lounged around at the same event in NYC on Tuesday.

One time political rivals, 42nd U.S. President Bill Clinton, 64, and 41st U.S. President George H.W. Bush, 86, joined forces at the same event in D.C. on Monday.

"Twilight" star Ashley Greene just broke up with Joe Jonas and has already been seen out in public with Kings of Leon bassist Jared Followill.