Rihanna and Chris Brown have reportedly made a sex tape.

The “Umbrella” singer and her 19-year-old boyfriend – who has been charged with felony assault and making criminal threats following his alleged assault on her last month – are said to have filmed themselves engaging in a series of “kinky” acts.

A source told America’s Star magazine: “Chris and Rihanna enjoy an aggressive love life that would shock many people. Rihanna loves dressing up – including as a dominatrix – and role playing. They both have kinky sides.”

Rihanna – who reconciled with Chris shortly after their altercation, but is now said to be taking time away from him to contemplate their relationship – has become increasingly concerned the footage could be made public and is desperate to keep it under wraps.

The source added: “Rihanna has no issues with her sexuality. She can be really out there. But she’d be mortified if her friends and family found this out.”

“Rihanna isn’t always the little goody-two-shoes everyone thinks she is, and Chris doesn’t want or need another scandal.”

Chris is accused of hitting, biting and choking Rihanna until she was unconscious in his rented silver Lamborghini.

The pair are not the first famous faces to film their bedroom antics, Pamela Anderson and Tommy Lee’s homemade video was famously made public when their home was burgled.

Paris Hilton, Colin Farrell and Tom Sizemore have all also appeared in sex tapes.

Meanwhile, Rihanna has been spotted cozying up to “That 70s Show” actor Wilmer Valderrama at Los Angeles nightspot Les Deux.

An onlooker said: “I couldn’t tell whether they were kissing or just talking really close together, but something was definitely going on there.”

Reese Witherspoon has sparked fresh marriage rumors after she was spotted wearing an engagement ring.

The “Legally Blonde” actress – who has been dating Jake Gyllenhaal since 2007 – hastily removed the sparkler during a recent photo shoot when she realized people were staring at it.

A source at the Avon shoot, which was held at Los Angeles’ Sony Studios, told America’s Star magazine: “It was gorgeous, and everyone noticed it right away.”

“But she took it off as soon as she saw people staring. Reese stuffed it in her bag and didn’t put it on again the rest of the day.”

Last month, Jake was spotted engagement ring shopping in New York.

The “Brokeback Mountain” actor spent four hours searching for the perfect band in a jewelery shop.

According to recent reports, Jake had been planning to whisk Reese away on a romantic Egyptian holiday to pop the question.

The 28-year-old actor has been making a huge effort to spend time with 32-year-old Reese’s two children recently – nine-year-old Ava and Deacon, five, from her previous marriage to actor Ryan Phillippe.

The actress and campaigner for child poverty has sparked concern recently with a massive plunge in weight.

She appeared overnight at a charity news conference in Washington looking emaciated and exhausted.

America’s The National Enquirer magazine is reporting this week that Jolie has a potentially fatal “serious health problem.”

Pre-publication shots of the cover show headlines claiming Jolie is “losing her hair”, suffers “uncontrollable shaking” and is plagued by blinding headaches.

It also adds her beau Brad Pitt will stand by the actress, despite rumours as to the state of their relationship.

Jolie’s brother James Haven has publicly stated he is worried about his sister’s health, though he was more concerned with her shocking weight loss since giving birth to baby Shiloh last May.

He has also told a British paper that she was not eating well and that both he and Pitt were concerned and pushing her towards a healthier lifestyle.

Their mother died in January adding to Jolie’s pressure.

But the 32-year-old Tomb Raider star has carried on with a string of high-profile engagements including her UN charity work and the recent adoption of Vietnamese baby Pax Thien.

Pax joined Jolie’s and Pitt’s Cambodian-born adopted son Maddox and Zahara, who was adopted from Ethiopia, plus Shiloh.

Last night a noticeably thin Jolie spoke in Washington to announce the formal launch of Global Action for Children, an advocacy organization dedicated to orphans’ and children’s issues.

She pushed for more US aid for education in developing countries during an event to help an orphans advocacy group establish its headquarters in the United States capital.

“This is a happy day because it is not often enough that these children are represented in this town,” Jolie said.

Jolie appeared with four others to open the Washington headquarters of Global Action for Children, a nonpartisan advocacy group formed in 2003.

The group, supported by a collection of charities, religious groups and nongovernmental organisations, wants the Bush administration to commit an additional $US2.5 billion ($A3 billion) a year to education and to aiding orphans in developing countries.

“The crisis has far outpaced the funding,” said Jennifer Delaney, the group’s executive director.

Jolie said orphan children sometimes beat the odds and survive but often are enslaved, resort to prostitution or are forced to become child soldiers. She said vulnerable children could be recruited to join terrorist organisations.

“Our government has the power to choose which path these children are going to take,” Jolie told reporters at the National Press Club. “We know the consequences of our inaction.”

Jolie has adopted three orphan children, but said any help that people in the US can offer is better than nothing. “The best solution for anyone who is abandoned or displaced is to be home (in their own countries),” Jolie said. “I would support that first and foremost.”

Jolie demurred when asked if her cause might be better served if she became more political or ran for elective office. “I certainly don’t think anybody wants that,” she said, laughing.

Leonardo DiCaprio has branded rumors he is to become a father ”100 per cent made up b*****ks.”

It was reported yesterday (04.12.07) his Israeli model girlfriend Bar Rafaeli is expecting their first child in the autumn, but Leo says the story is false.

A representative for the actor said: “The story is totally b**l s**t. 100 per cent made up b*****ks.”

It was claimed the 32-year-old actor felt the fatherhood urge after his “Spider-Man” star friend Tobey Maguire became a dad last November.

A source said: “He dotes on Tobey’s little girl Ruby and has been asking him all about what it’s like to being a dad.”

The “Titanic” star was alleged to have proposed to Bar, 21, during their recent trip to Israel. Rumors were rife the couple held a secret engagement party in Tel Aviv.

It is believed they plan to marry in Israel this summer, with a larger celebration in the US later in the year.

An employee at the Beverly Hills kids boutique Bellini told the New York Daily News that Aguilera and her husband of more than a year, Jordan Bratman, went on a $3,000 shopping spree at the store on Saturday where she confided that she’s having a baby.

“They seemed really excited,” a worker at the boutique told the Daily News.

“She was talking to another customer and she said she took a home pregnancy test and that it was positive. She kept saying they’d have to come back when they knew the sex of the baby.”

However, Xtina’s rep says that the employee needs to get her eyes checked because the singer was 50,000 feet in the air at the time of the supposed sighting.

“She was not at Bellini. She was on a plane to Las Vegas for the NBA appearance.”