Only four months ago, Jenna Jameson welcomed twin boys into the world and already the retired porn princess has dropped those pregnancy pounds, is back in tip-top shape and doing what she does best — taking her clothes off.

Pop Tarts has exclusively learned that Jameson shot quite the sexy campaign for Playboy Magazine in Los Angeles on Thursday evening, but in between takes for her upcoming spread the adult superstar took a stand by shooting a new ad for PETA's McCruelty campaign against McDonald's. Although Jameson donned a sexy strapless dress, she is bound to turn you off your Happy Meal.

PHOTOS: Click here for photos of Jenna Jameson.

"Chickens killed for McNuggets are slammed into metal shackles. Spinning blades meant to cut their throats often tear through their wings or bodies instead,” Jameson said in the 30-second spot which is set to hit the airwaves this Fall. “Many birds survive this terrifying, painful process, only to be scalded to death in defeathering tanks. There’s a less cruel method of slaughter that renders chickens unconscious, but McDonald’s chooses to allow birds to be mutilated and scalded instead."

A rep for McDonalds did not respond for comment.

But back to something almost as important, like Jameson’s sensuous structure, the starlet credits her strict vegetarian diet , “healthy” relationship with her man Tito Ortiz and oddly enough, paddle-boarding for bringing back her pre-preggo body.

Warner Bros. Under Fire Over 'Irresponsible' New Horror Film Targeting Adopted Children

Warner Bros. new horror flick “Orphan” may be causing its audience to scream, but it is also causing a squeal from a growing number of national adoption groups and organizations who are urging Americans to boycott the flick which is centered on an evil adopted child.

Leading philanthropist and founder of Children Uniting Nations which supports foster youth, Daphna Ziman, is one of the many who are outraged and joining the charge to promote a socially responsible solution.

“Although we recognize the film is fiction, the response we have had from adoption groups and potential adoptive parents has been overwhelming,” Ziman told Tarts. “When a major corporation sensationalizes on an area that affects our nation's most needy children without responsible messaging it is unconscionable. Warner Bros. needs to be socially conscientious of the children they are potentially harming and put a disclaimer on the film and a public service announcement educating viewers on the plight of children living in protective custody through no fault of their own.”

Advocacy groups believe that the film may feed into any possible pre existing doubt and prevent parents from adopting. Although Warner Bros is yet to meet Ziman’s request for a meeting with executives to add the disclaimer, the studio has reportedly removed a highly criticized line from the film where the orphan Ester says, “It must be hard to love an adopted child as much as your own.”

“'Orphan’ is a work of fiction; it is not a depiction of any real-life events or situations and has never been portrayed as anything but an entirely fictional story,” a rep for Warner Bros told Tarts in response. “We apologize if we appeared insensitive with the initial trailer as it's never our intent to offend anyone with our products.”

K-Fed is K-Fat & Financially Tight

Despite the fact Kevin Federline is earning around $30,000 a month in child support from ex wife Britney Spears, Pop Tarts has been told that the backup dancer turned reality star failed to tip the cocktail waitresses even a single penny at the Hard Rock Hotel & Casino’s Wasted Space on Thursday night even after being given two complimentary bottles of Grey Goose.

After wrapping up his new VH1 reality show, a particularly heavier Federline partied hard with yesterday girlfriend Victoria and a group of 15 friends while his VH1 stage crew spent most of the night filming while sipping cocktails. At one point K-Fed decided he wanted to draw more attention to himself and got on stage to hype the Sin City crowd, bragging that he was intoxicated. Fed and his we-don’t-tip posse left the club around 3 a.m., when they reportedly moved on to party in the new Paradise Tower Mega Suite.

But on the brighter side, Brit’s conservatorship is up for review and November and she may very well be her own boss again — and perhaps one step closer to regaining custody of her two sons.

Pop Tarts Scene & Herd

Matthew Broderick quietly reading the paper while on board the Hamptons Luxury Liner heading west to Manhattan from Amagansett on Monday afternoon.

Jamie Pressly celebrating her birthday at the new BOA Steakhouse in West Hollywood on Monday with her new man (an entertainment lawyer) and a group of friends. Pressly was also spotted checking into Hard Rock Hotel San Diego on Thursday and overheard gushing that her new beau is actually her fiancé!

Karina Smirnoff (and her puppy) prancing down the runway in couture from Natori at Animal Fair Magazine’s 10th Annual PAWS FOR STYLE charitable fashion show to benefit The Humane Society of New York on Monday night.

Denise Richards hanging out in her cabana drinking Belvedere Vodka with a group of friends at the TAG SIGNTAURE SERIES Launch at the London Hotel in LA on Tuesday night. Meanwhile, Ryan Philippe came early to hang out with Ludacris.

Bette Midler at the Morris Arboretum in Chestnut Hill, PA to see its new Tree Adventure exhibit featuring Out on a Limb, a 450 foot long canopy walk that soars 50 feet above the forest floor on Tuesday.

Audrina Patridge partying up at Red Bull Toasted honoring Travis Pastrana at Hollywood's Avalon on Tuesday night. Verne Troyer also attended and was made of on-stage by almost everyone over his sex tape controversy last year.

Jessica Alba and her daughter Honor stopping into Beverly Hills hotspot Lemonade for lunch and a Watermelon Rosemary Lemonade on Wednesday.

Brody Jenner and Jayde Nicole enjoying date night with Brody's folks at West Hollywood's new BOA location on Wednesday night.

Brody Jenner and girlfriend Jayde Nicole enjoying date night with Brody's folks at the new West Hollywood location BOA Steakhouse on Wednesday night.

Brooke Shields getting ‘NYC’ etched on the back of her phone using Coveroo while chatting to Chloe Sevigny at the Blackberry Tour Sprint Launch Event in NYC's Thompson Hotel on Wednesday night. Meanwhile “Gossip Girl” hottie Chace Crawford was caught out texting a very important man in his life - his father.

Dayanara Torres discussing her plans for a summer vacation in Europe over truffle fries and a glass of chardonnay at STK Los Angeles on Wednesday evening.

Denise Richards and Chelsea Handler getting their nails done at the GIVE & GET FÊTE benefiting Dress for Success Worldwide-West at the Frédéric Fekkai Salon in Beverly Hills on Wednesday.

The Hilton sisters, Camila Alves, Olivia Wilde, Molly Sims, Mandy Moore, Gabrielle Union and Nikki Reed mixing and mingling at the EXPRESS TXT L8TR Campaign Event at Nobu West Hollywood on Wednesday night.

"The Real Housewives of New Jersey’s" Danielle Staub celebrating her (gasp) 47th Birthday and lifting her shirt to show off her abs and belly button ring to guests at the MadeMan.com launch party in NYC on Wednesday.

Kevin Federline at the Hard Rock Hotel & Casino, Las Vegas on Thursday relaxing at the HRH Beach Pool Club before filming his new VH1 reality show.

Married country music couple and Overstock.com commercial stars Joey & Rory telling Tarts from their hometown in Nashville last week about the personal pain captured in their new single 'Say Goodbye'.

"About 15 years ago I lost my brother in a car wreck, my mom and I were the first ones to the scene even before the ambulance. He never made it through and we had to let him go," said Joey. "We never really got to tell him goodbye and this song is for that story, other people tell us that hearing this song has helped them cope and heal too."

Danny DeVito and his wife having a late lunch of blueberry pancakes at macrobiotic hotspot M Cafe in Beverly Hills on Thursday afternoon. DeVito then caught up with his "Twins" co-star Arnold Schwarzenegger at YOGEN FRüZ nearby.

Annalynne McCord refusing to get a complimentary "Twilight" special services package while at the Gavert Atelier Salon of Beverly Hills on Thursday, despite her on again/off again relationship with Kellan Lutz.

Newly single Kim Kardashian strong and happy while having a "Fit in Your Jeans" BBQ at the Sierra Mist Malibu House on Thursday to celebrate being the #1 amazon.com buns workout since April. The reality starlet even helped her sis Kourtney and friends work off the BBQ with some signature moves.

Hugh Jackman working out with personal trainer Jim Karas on Thursday at the James Hotel in Chicago.

Cuba Gooding Jr. at Hard Rock Hotel & Casino Las Vegas’ new restaurant Rare 120 with a group of guys on Thursday night while in town for the Bad Boys of Hockey tournament put on by Jerry Bruckheimer.

Dave Navarro rocking all black and several skull rings while munching on tuna and scallops with a friend at STK Los Angeles on Thursday night.

Taylor Swift looking her typically stunning self in the lobby of the SLS Hotel in Los Angeles on Thursday night.

Usher at a VIP table with two friends at Moon Nightclub inside the Palms in Vegas in the wee hours of Saturday morning.

Julianne Hough celebrating her 21st birthday with her closeknit family at Borgata Hotel Casino & Spa in Atlantic City on Saturday. The whole group chowed down at Bobby Flay Steak in Borgata where Julianne drank a specialty cocktail made exclusively for her in honor of her special day before moving on to club mur.mur where she and her sisters danced the night away after blowing out the candles on her Cowboy boot birthday cake.

Christina Aguilera sipping on Vueve Cliquot champagne while watching the Vegas style performances in the main room of Playhouse Hollywood on Saturday night while Mario Lopez, Ryan Seacrest, Jordan Bratman, Rachel Leigh Cook, Oscar De La Hoya and Daniel Gilles partied in the VIP room upstairs.

Cuba Gooding Jr., Ne-Yo, Brody Jenner and Elijah Kelley hanging out at Body English inside the Hard Rock Hotel & Casino in Vegas on Saturday night. On again/off again lovers Tommy Lee and Pamela Anderson were also at Body English (making out for most of the night) and Pam even ate off his candy necklace.