Celebrity Fireworks!

Brad Pitt is a hands-on dad with 9-month-old daughter Shiloh on the New Orleans set of The Curious Case of Benjamin Button on Thursday. And the Jolie-Pitt clan will soon be expanding: Angelina Jolie has filed papers to adopt a child in Vietnam. Pitt told a source in January the couple wanted to add to their growing family – including son Maddox, 5, and daughter Zahara, 2 – saying, “Always, of course.”

Courteney Cox, 42, and David Arquette, 35, are slamming recent reports claiming that their 7-year marriage is on the rocks, and that Cox has been cozy with “Dirt” costar Josh Stewart.

A rep for the couple tells all:

“There is not a shred of truth to the rumors about the state of their marriage. They are happily married and like most married couples, they have some separate friendships and interests.”

Onscreen lovebirds Rachel Bilson and Adam Brody, who play a cute couple on “The O.C.” and have also dated offscreen since 2004, have decided to call it quits.

That may explain why Adam showed up solo to a party on Nov. 28 in LA. According to reports, he was acting very single. He’s been spending a lot of time without Rachel at the clubs with his guy friends.

Reps for the two would not comment.

Actress Elizabeth Hurley and Indian businessman Arun Nayar wed twice over the weekend. The couple had a private civil ceremony on Friday, followed by a religious service the following day, both at Sudeley Castle in Winchcombe, Gloucestershire. Hurley has taken the groom’s surname and will be known as Mrs. Nayar, on paper at least.

Guests on Saturday included Donatella Versace (who designed Hurley’s dress), Jimmy Choo president Tamara Mellon, models Elle Macpherson, Eva Herzigova, and Yasmin Le Bon, as well as designer Valentino, Trinny Woodall and Susannah Constantine of the BBC television series “What Not To Wear.”

Hurley’s former boyfriend, actor Hugh Grant, was a no show. Liz called him the day before begging him to come, but he insisted it would not feel right, according to a source. He didn’t want to detract any attention from her big day.

Soccer star David Beckham suffered an injury to his right knee during a game on Sunday.

The Real Madrid midfielder, who signed a $250 million contract to play for the L.A. Galaxy in January, was hurt when he collided with an advertising sign while playing at home against Getafe. After the injury, Beckham tried to continue playing, but ended up limping off the field.

Beckham was later diagnosed with damaging the lateral internal ligament of his right leg and is undergoing further tests Monday to determine the extent of the injury.

Anna Nicole Smith will be remembered Friday in the Bahamas in a service befitting her flamboyant life.

About 300 guests will attend the service at a church filled with pink flowers – her favorite color – and a well-known but as-yet undisclosed singer will perform, a family friend said. A dozen dresses have been designed for Smith, the custom gown in which she will be buried in is very elegant.

Florida Circuit Judge Larry Seidlin last week granted custody of Smith’s body to Richard Milstein, the court-appointed advocate for Smith’s 5-month-old daughter, Dannielynn. Arthur, Anna’s mother, had contested the ruling, saying she wanted to bury her daughter in their home state of Texas.

Britney went back to rehab today for the third time in eight days. Her mother, Lynne Spears, drove her to Promises Treatment Center in Malibu last night. This stint is her last chance in her custody battle with Kevin Federline. If she doesn’t complete a full stay this time, K-Fed will immediately go to court seeking full custody.

Britney Spears checked into a rehab facility and then abruptly checked out. And then on Friday, she returned to Southern California – and she shaved her head completely bald. Then she went straight to the tattoo parlor and had two tattoos done, including a pair of small lips on her wrist.

A couple of nights later, the 25-year-old pop star arrived at The Roxy in a blonde wig and sunglasses at about 11 p.m. Sunday – but once inside no one seemed to notice the still-shaved Spears, who went into the VIP bar On the Rox.

Today, Britney Spears has voluntarily checked herself into an undisclosed rehab facility. Everyone is hoping that this time she will receive some serious help for the major issues she is currently facing.

Anna Nicole Smith, age 39, was pronounced dead February 8 on Thursday. The former Playboy model whose flamboyant made-for-reality-TV life featured paternity and inheritence battles, drug and weight struggles, and her son’s mysterious death, died in Hollywood, Florida.

Smith died five months after her 20-year-old son, Daniel, died in his mother’s Bahamas hospital room. Daniel’s death came just three days after Smith gave birth to daughter Dannielynn Hope. After the news of Smith’s death, an emergency hearing was scheduled to occur in Los Angeles on Friday regarding the paternity of Dannielynn.

Lindsay is trying to get off to a new start on the set of her new movie, I Know Who Killed Me in Altadena, Calif. The actress, who is currently in rehab, recently dropped a movie role to focus on improving her health.

After wrapping this film, Lindsay should have plenty of time to rest and relax.