Beauty

"Armageddon" star Liv Tyler, 33,and "Big Love" beauty Chloe Sevigny, 36, both showed off their best hair flips at the same event in NYC the other day.

With her industrial strength mature black bikini showing off her girlish figure, pop sensation Ke$ha soaked her sexy bones in the waters off Australia on Tuesday.

Here's hard rocker Alice Cooper in NYC last night (top) -- and lip-synch wonder Britney Spears back when she could give a great live performance in 2001 (bottom).

Here's Facebook kingpin Mark Zuckerberg in Palo Alto this weekend (left) -- and "The Social Network" star Justin Timberlake in NYC two years ago (right).

With her robust and luscious bronzed booty on full display, "Jersey Shore" good time girl Snooki took time out from partying in the Garden State to party in Vegas this weekend.

Jerry Supiran is best known for playing the real life kid Jamie Lawson opposite Vicki the Robot on the '80s television show "Small Wonder." Guess what he looks like now!

'Nuff said.

Pat Boone's daughter Debby Boone became famous for her 1977 hit single "You Light Up My Life." Guess what she looks like now!

Celebrities get mistaken for other celebrities all the time ... like Josh Duhamel ... who says he's been confused with all sorts of famous people ... including one very famous "American Idol" star ...

Matthew McConaughey's mother Kay stole the spotlight from her son by flashing some thigh -- and her maternal panties -- at the premiere of "The Lincoln Lawyer" in L.A. last night.

Here's comedian Whitney Cummings at "Comedy Central's Roast of Donald Trump" in NYC last night (left) -- and Angelina Jolie back in 2009 (right).

Here's actress Jane Fonda at some event in West Hollywood on Tuesday (left) -- and the White spy from the "Spy vs. Spy" comic strip (right).

Here's Patriots QB Tom Brady celebrating Carnival in Rio on Monday (left) -- and Andrea Barber as Kimmy Gibbler on the TV series "Full House" (right).

He's currently the #3 ranked player in men's tennis, but Serbian stud Novak Djokovic's lean, ripped body was in tip-top shape in Malibu on Sunday.

With their exquisite weaves, full face and taut skin in full effect, porn goddess Jenna Jameson, 36, and former Danity Kane "singer" turned reality star Aubrey O'Day, 27, traded beauty secrets at the same event in L.A. this weekend.

With her sexy bare feet, luscious tatted up flesh and demure form-fitting black sequined tank dress, "American Idol" season 3 winner Fantasia Barrino mesmerized the audience at an event in D.C. this weekend.