Beauty

California girls Gwen Stefani and Katy Perry combined their blonde and brunette forces at a fashion event in West Hollywood on Thursday.

Question is ...

Emma Roberts donned her aunt Julia's iconic "Pretty Woman" hooker outfit and hit up a Halloween party in Beverly Hills last night.

Despite suffering multiple injuries in a bad car accident Wednesday, Diddy surfaced on the streets of L.A. yesterday -- looking pretty damn healthy.

As we reported, Diddy was involved in a serious car accident in Beverly Hills -- and according to his rep, the rap mogul sustained injuries to his neck, ribs, and collarbone.

Diddy was riding passenger when his SUV collided with another car. After the accident, Diddy was so in shock he had to lie down on the grass.

Just days after news broke of the demise of his marriage, Jessica and Ashlee Simpson's newly single father Joe Simpson was spotted out in L.A. on Thursday sporting a much more, er, youthful look.

Doing his best Ellen DeGeneres impersonation, the 54-year-old rocked blonder highlighted locks, a fitted yellow sweater, black skinny jeans and matchy matchy spiffy kicks.

As TMZ reported, Joe's wife Tina Simpson filed for divorce last month -- after being legally hitched for 34 years -- claiming their marriage has become "insupportable because of discord or conflict of personalities."

As the world is well aware, Olympian McKayla Maroney isn't impressed by much, but we may have finally found something that she actually does appreciate ... an exotic bird.

While the cheetah exhibit at Busch Gardens Tampa Bay elicited her trademark bored smirk on Thursday, the 16-year-old gold medal winning gymnast showed some positive emotion and appeared generally excited with an African Ground Hornbill perched on her arm.

She's so fowl.

Dolly Parton is gonna be a NAUGHTY girl this Halloween ... and she's not afraid to admit it.

Parton was having dinner at Matteo's in L.A. last night ... when she told us she had picked up a sexy costume at the famous Trashy Lingerie shop earlier this week ... and it sounds like it's gonna be AWESOME.

"We have fun at Halloween," Parton told us ... and as she grabbed her legendary boobs, she added, "I have two pumpkins ... that's all I care about."

God we love you.

If you are voting for Barack Obama then Katy Perry makes perfect fashion sense.

Wearing a white latex frock made to look like a ballot with Obama/Biden marked off, Katy performed at a rally for the President in Nevada on Wednesday night.

Katy -- who turns 28 today -- has voiced her support for Obama in the past.

It was a ménage à trois dinner date, as Cameron Diaz got cozy with new bestie Gwyneth Paltrow and her Coldplay hubby Chris Martin while enjoying some sushi at Sugarfish in Brentwood on Monday.

Bruce Willis and Demi Moore's eldest daughter, Rumer Willis, showed off her A-list genetics by flashing her smokin' hot bod in a black bikini in Cancun this weekend.

Another member of Hollywood royalty has gone two pieces.

A week after free falling from 24 miles up in the air and breaking the speed of sound, hunky daredevil Felix Baumgartner traded his space suit for hip downtown gear and hit up trendy NYC hotspot Sons of Essex on Monday.

Just like everyone else and their mother this Halloween, "Big Rich Texas" blondes Bonnie Blossman and her daughter Whitney are trading their fancy clothes and beauty products for toilet paper and go go juice and dressing up like America's favorite crazy down-home family ... Dina and Lindsay Lohan Mama June and Honey Boo Boo!

In fact, Bonnie and Whitney are dressing up as the sketti lovin' duo to judge a local costume contest this weekend ... for a pre-Hallows Eve test run.

Christina Aguilera has the chance to pump up a dating site that caters to BBWs ... and the men who love 'em -- all she's gotta do is accept one really, really BIG offer.

Eva Longoria has a nasty red blotch on the back of her neck -- and she's probably THRILLED about it ... 'cause it used to be a tattoo of her ex-husband's basketball jersey number.

Back in January, Longoria began laser treatments to erase 3 Tony Parker-inspired tats -- the "NINE" tattoo ... the wedding date tattoo on her wrist ... and Tony's initials (which were put on a very private, undisclosed location).

Tattoo removal doesn't happen overnight -- it takes multiple sessions, which have to be spaced out over several months.

The Situation scored a major legal victory over a company that hired him to promote their anti-fat cream, but then sued him for reneging his duties and hiding an RX drug addiction ... TMZ has learned.

According to court docs ... the "Jersey Shore" star and a company called Performance Brands both agreed to dismiss their dueling lawsuits (Sitch had filed a counter suit) after settling out of court.

Sources close to Sitch tell us ... PB agreed to cough up a "good sum of money," and Sitch won't have to shell out a dime.

TMZ broke the story ... PB sued Sitch after they hired him to be the face of their fat-metabolizing cream (and forked over a $75k advance) -- claiming he did ZILCH to promote the product. The company also claimed he breached his contract by hiding his RX addiction.

Sitch counter-sued, claiming PB was the one in breach of contract.

Christina Aguilera's Rubenesque physique could pay off in a huuuuge way -- TMZ has learned she's been offered $3 MILLION to be the face of a dating website for "big and beautiful" women.

The person behind the offer is former "America's Next Top Model" winner Whitney Thompson -- the first plus-size model to even win the show.

Whitney now runs TheBigandTheBeautiful.com -- and fired off a letter to Aguilera, saying she's extremely interested locking down Christina as the spokesperson for the website, which is "specifically designed for women with curves."

As part of the deal, Aguilera would agree to at least one TV commercial, one radio commercial, two photo shoots, and four public appearances. She also wants Christina to sing a jingle for the website.

The only thing hotter than Ben Affleck's career right now is ... Ben Affleck.

Here's the 25-year-old Oscar winner back in 1997 (left) -- and 15 years later, the 40-year-old "Argo" director/star at the film's London premiere this week (right).

Just like "Gigli," Ben is da bomb.