Jessica Simpson just keeps on giving - a week after buying her dad a Ferrari, the pop star has handed officials at a Mexican orphanage she supports the keys to a brand new minivan. The 26-year-old singer/actress surprised staff and kids at the Casa Hogar Elim orphanage in Nuevo Laredo, Mexico on Sunday when she drove a 2007 Chrysler Town & Country through the gates of the home. Simpson has enjoyed a long history with the orphanage - when she first visited the place seven years ago, she had to be talked out of adopting one of the children. The singer has been a regular visitor and contributor ever since. Mama Lupita, who runs the struggling orphanage is the new owner of the minivan. A thrilled Simpson was overcome with emotion as the children thanked her for her generosity. She said, "I'm so honored and happy to be able to help." Simpson was joined in her mercy mission by mum Tina and manager/father Joe. The singer won a Chrysler sports car at the MTV Video Music Awards last year, but asked the bosses at the auto firm to exchange the vehicle for a minivan, so she could donate it to the orphanage, after hearing that Mama Lupita's van had broken down.

Jack Valenti, the retired president of the Motion Picture Association Of America (MPAA), is recovering in the hospital after suffering a stroke. The 85-year-old movie industry heavyweight is said to be "under a doctor's care" and "resting comfortably" at Baltimore, Maryland's Johns Hopkins Hospital. Valenti led the MPAA for 38 years and was the organization's president and chief executive officer until his resignation in 2004. The co-founder of advertising and press agency Weekley & Valenti, he was partly responsible for handling the press during President John F. Kennedy's ill-fated trip to Dallas, Texas in 1963. Valenti was in the motorcade six cars behind the Kennedy's vehicle when the president was assassinated.

Anna Nicole Smith's longtime companion Howard K. Stern insists the tragic model would still be alive today if she hadn't refused medical help before her death. In a statement released late on Monday, Stern revealed he and other friends and aides had urged Smith to check into a Florida hospital after her temperature spiked, but, fearing a "media frenzy," she insisted on sleeping off her fever. In announcing the cause of death as an accidental drug overdose earlier on Monday, medical examiner Dr. Joshua Perper revealed the model should have already have been in hospital at the time of her death. Perper said Smith had been suffering from stomach flu, a 105 degree fever and an infection from repeated drug injections. In a statement, released by Stern's lawyers, Smith's companion reveals his girlfriend refused emergency care in the days before her death because "she did not want the media frenzy that follows her." He claims both he and Smith's physician begged her to seek proper medical help, but "Anna called the shots in Anna's life and everyone close to her knows that."

A Lot Like Love star Ashton Kutcher's prank show Punk'd is ending after five years of terrorizing celebrities. Kutcher hosted, executive produced and created the MTV show, which set up his famous friends without their knowledge. Some of the most memorable episodes saw Justin Timberlake get emotional when he thought the US tax officials were seizing some of his goods, and Studio 60 on the Sunset Strip actor Matthew Perry becoming involved in a FBI operation as he tried to buy a stolen car. The final season of Punk'd will begin on MTV on April 10 and features celebrity 'victims' such as Oscar winner Hilary Swank, singer Nelly Furtado and Nashville Star host Jewel.

New York Senator Hillary Clinton is set to appear as a character on satirical cartoon series South Park. The presidential hopeful will be recreated in two-dimensional form in an episode of the controversial show, which will air on TV network Comedy Central tonight. Sources from the network tell the New York Daily News the storyline will focus on a local rally for Clinton's political campaign, but would not elaborate further on the show's final plot. Last year, an episode dealing with Scientology and Tom Cruise caused Isaac Hayes, who played Chef on the show, to quit over "inappropriate ridicule" of the controversial religion.

Lindsay Lohan and Robbie Williams have formed a new friendship after recently completing separate rehab stints. Lohan was spotted out in Hollywood on Monday night with the former Take That singer - but the pair's representatives are keen to point out they're not a couple. Mean Girls star Lohan recently underwent rehab in California, while Williams battled his demons in Arizona, and now the new friends are leaning on each other for support. Meanwhile, Lohan has told America's People magazine that she is in love, but refuses to confirm reports she's dating British actor Jude Law. She says, "I'm dating and I'm really happy and I'm having fun." She also tells the magazine that life is good after her recent stint at rehab facility the Wonderland Center in Los Angeles. Lohan adds, "There's no way you can't learn a lot in a program like that, and it's good. I recommend it for anyone who needs it."

Spanish actress Penelope Cruz is going out of her way to keep her new romance with Josh Hartnett out of prying eyes after enjoying public affairs with Tom Cruise and Matthew McConaughey. The Volver star and her actor beau fled from trendy Los Angeles restaurant El Coyote on March 21 after learning all private rooms were taken. Cruz and Hartnett then showed up at another top restaurant, The Little Door, where they asked for the restaurant's secluded Blue Room, according to In Touch magazine. A waiter tells the publication the couple left through separate doors, but "before they went, they kissed goodbye," adding "they were touchy-feely all night, holding hands and kissing... They were cute."

Country star Wynonna Judd is filing for divorce after learning her husband D.R. Roach was arrested for aggravated sexual battery against a minor. Roach, who is currently being held on $750,000 bail in Texas, was arrested and charged with three counts of battery against a 13-year-old last week. In a posting on her website, announcing her decision to divorce Roach, Judd writes, "I am obviously devastated." Roach has been estranged from Judd since December, and he has been battling alcoholism in rehab since February. Roach worked as Judd's bodyguard for 10 years before the couple wed in November 2003.

American actor Matthew Fox has vowed to quit smoking by the end of 2007- because the bad habit has left him cowering from his children. The Lost star, who has smoked cigarettes since he gave up chewing tobacco at university in the late 1980s, admits he hates the addiction - and resolves to quit each new year. He says, "I make the same one every year and I never keep it, but I've vowed that this will be the year when I quit smoking. I go through periods when I smoke a lot depending on how stressed I am. I feel terrible about it because I have kids and I try to hide it from them - but this is the year it's going to stop."

Christina Aguilera has disappointed US fans by reportedly lip-syncing at a gig on Friday night. The "Beautiful" star encountered undisclosed technical problems at the concert in Madison Square Garden, New York City, prompting the audience to speculate the star was miming during the entire set. Aguilera's manager Irving Azoff has admitted there was a sound-related problem at the concert. He tells the New York Daily News, "Miss Aguilera is one of the most talented vocalists to ever grace the stage; however, we did have a technical problem with the sound equipment at the Garden."