Jennifer Aniston bares her incredibly fit body in a new SmartWater ad. The 41-year-old actress, holding a bottle of the H20, is a yoga enthusiast ... and boy does it show!

Guess who else gets sweaty for SmartWater? Click thru to see the hottest football hunk we know posing for Glaceau.

Maksim, Erin and the rest of the Dancing With the Stars cast need to stop going out and celebrating every night and instead go home and NAP. All that dancing is exhausting and it shows!

Sidebar, who do you think will win this time around? I hope not Erin Andrews - something about her gets on my nerves!

Nadya "Octomom" Suleman is teaming up with animal rights group PETA for a good cause ... and for some extra cash.

The mother of octuplets will be unveiling a sign on her front lawn tomorrow that reads, "Don't Let Your Dog or Cat Become an 'Octomom' - Always Spay or Neuter."

Suleman was offered $5,000 and a month's worth of free veggie dogs and veggie burgers for the whole family if she'd display the sign in front of her La Habra home.

Sources tell X17online it took a while to nail down the offer "because Nadya's attorneys were trying to get more money for the sign."

A PETA spokesperson tells X17online exclusively:

"Too many dogs and cats are 'octomoms,' and while there's a lot of controversy regarding Ms. Suleman's decision to use in vitro fertilization, there's no question that the breeding of cats and dogs is killing cats and dogs. What better way to get the message out about saving dogs and cats than displaying a big pro-sterilization banner on one of the most-watched front lawns in the U.S.?"

X17 has learned that there will be someone in a dog costume at the unveiling to show support for Nadya. We have a feeling it won't be the father of the octuplets ...

Cannes is definitely in full swing with celebs and fashionistas like Penelope Cruz, Javier Bardem, Kate Beckinsale and Naomi Watts stepping out in style at the swanky film festival.

Juror Kate Beckinsale is definitely in the running for our choice for Cannes best-dressed, changing from black sequins at a screening of the film Biutiful into a stunning pale pink Grecian dress for a party later that night.

Pene and Javier, who have only recently stepped out in public as a couple wore matching (boring) black, while Naomi Watts did the same, but forgot to wear a bra! We think we spot a runaway nipple...

Check out our MONSTER gallery of all the celebs partying like rock stars in Cannes last night!

Ashley Greene hasn't yet signed on for Twilight's Breaking Dawn, but the smoking hot vampiress is looking pretty fang-tastic on the cover of Seventeen magazine's June/July issue.

The 23-year-old actress was asked about her feelings for Rob Pattinson, and would you believe she says "the chemistry wasn't there." WTF? Ashley goes on to say:

"When I met Rob, I didn't think twice about him. He's really attractive... He also doesn't understand girls. He gets alot of attention from them, but he doesn't quite understand it because before Twilight, he was just a guy from Harry Potter."

As for the whether she's ever hooked up with co-star Kellan Lutz:

"I've definitely thought about it. He's one of my best friends, but if we were going to be romantic, we would have done it years ago! I like having him to talk to about other guys to get that male perspective. I really cherish our relationship, so I wouldn't want to mess that up by dating."

Now THAT'S willpower.

And a year ago he thought he had "zero chance" of it ever happening!

But due to his contribution to the music industry - not to mention his work for the Haiti earthquake victims - the American Idol judge is to be knighted this year.

After all, Susan Boyle was discovered on his show and she was the breakout singer of last year!

Additionally, former Prime Minister Gordon Brown recommended Simon Cowell for knighthood. Congrats!

Last night Jessica Alba and Cash Warren were snapped leaving the Lakers game at the Staples Center, and the couple appeared to be in a great mood after watching Kobe and company beat the Suns 128 to 107.

Lots of other celebs showed up to check out the first game of the Western Conference finals, including Khloe Kardashian, Kelly Slater and Sylvester Stallone ... click the gallery below to see more!

Marilyn Manson and fiancee Evan Rachel Wood are set to star in the horror film Splatter Sisters, and Variety describes the flick as a "sexploitation-serial-killer-slasher-road-movie circa 1989." Fun!

Filmmaker David Gordon Green said, "This is a role Marilyn Manson was born to play, and with Evan Rachel Wood bringing dramatic gravity to the ensemble, I have no doubt this will take the horror genre to a new level."

But you know what they say about mixing business with pleasure...