Actor Leonardo DiCaprio’s relationship with Israeli model Bar Rafaeli is on the rocks and the couple has already been spending weeks apart, according to new reports.

The pair began dating in December 2005, following DiCaprio’s split from Brazilian supermodel Gisele Bundchen.

But they have been dogged by rumours of an impending break-up in recent months - and new reports allege the Titanic actor is already moving on.

Singing superstar Barbra Streisand has helped US presidential candidate Barack Obama pull in a whopping $9 million after performing a rare show at a Democratic Party fundraiser.

The diva played a set at the Regent Beverly Wilshire Hotel in Hollywood on Tuesday, where tickets cost $2,500 each.

A fundraising dinner held hours before Streisand’s gig also pulled in the stars.

Scarlett Johansson has visited Rwanda to increase awareness of AIDS sufferers in African nations.

The 23-year-old spent four days attending AIDS clinics alongside charity workers for RED - the initiative to combat the deadly disease through the power of consumerism.

The global brand, launched by U2 frontman Bono in 2006, partners huge retail companies including Gap, American Express and Converse who share profits from RED items to help fight AIDS in the impoverished continent.

Star Trek icon William Shatner is set to turn his sci-fi novels into a series of comic books.

The actor has teamed up with illustrators at BlueWater Productions to adapt his stories into graphic novels.

He told the Los Angeles Times newspaper: “They will be in the stores in March of 2009. I loved comics as a kid and. I used to sit under the sheets with a flashlight and read Superman when I was six in Montreal, and now, with the comics as they are today, it’s thrilling.”