Rita Ora joins 50 Shades of Grey cast, Christian Slater secretly weds Rita Ora out and about in Sydney, Australia. Picture: KHAP / Grey Wasp / Splash News Source: news.com.au BRITISH singer Rita Ora will play Christian Greys adopted sister, Mia, in the upcoming 50 Shades of Grey movie. Meanwhile, Gen X-ers breathed a collective sigh of despair at the news that 90s heart throb Christian Slater has secretly wed. UK singer (and occasional It Girl) Rita Ora is the latest addition to the 50 Shades of Grey cast. The 23-year-old nabbed the role of Christian Grey's adopted sister, Mia, reports Variety magazine. She joins stars Jamie Dornan and Dakota Johnson (who play those kinky bound-together lovers Christian Grey and Anastasia Steele), in the big screen adaptation of E.L. James" hit book. Also joining the cast is Oscar-winner Marcia Gay Harden, who'll play Grey's adoptive mother, while in other casting news, Elosie Mumford takes on the role of Anastasia's best friend Kate Kavanaugh, and Max Martini (best known for his role in Saving Private Ryan) will play Christian's bodyguard. Ora, it's clear, is just a bit excited about the role, enthusiastically sharing her news via Twitter. "It's official!" she wrote. I've been cast in @FiftyShades of Grey as Christian's sister Mia. #FiftyShades. The British singer, born in the former Yugoslavia, had her most recent album, Ora, hit number one in Britain. She's also become known for her eclectic fashion choices and her love of partying with best mates, Rihanna and Cara Delevingne. It will be Ora's first major role, but not her first appearance on screen. She made an uncredited appearance in last year's Fast & Furious 6 and she had a cameo in the television series 90210. Jason Biggs, left, with American Reunion cast member Shannon Elizabeth, was shocked by the coffee shop gimmick. Picture: Chris Pizzello/AP Source: AP He may have stuck his private parts into an apple pie for a role, but even actor Jason Biggs has his limits. The 35-year-old took to Twitter to have a crack at a "poor taste" gimmick by a Coffee Bean & Tea Leaf café in LA. What sparked Biggs" ire, was the shop displayed two tip jars, one marked "Fast and Furious" and the other "Varsity Blues," two films which starred Paul Walker, who died in a car accident over the weekend. Apparently, they were labelled so customers could decide which of Walker's films they liked better. "Umm, am I crazy, or does this seem exploitive and in poor taste? @CoffeeBeanLA," Biggs tweeted, along with a photo of the tip jars. The Coffee Bean franchise responded to Biggs' tweet, apologising for the faux pas. @JasonBiggs This is completely inconsistent w/our brand values & the jars have since been removed. Thank you 4 bringing this 2 our attention," reps for the franchise tweeted. Biggs and Walker co-starred in Disney's Eight Below back in 2006. Christian Slater has married his girlfriend of three years, Brittany Lopez, at an impromptu ceremony. Gen X-ers everywhere are shedding a tear with news that Christian Slater has tied the knot. Slater married non-actor Brittany Lopez at a courthouse ceremony in Florida, his rep confirmed to the Associated Press. The 44-year-old actor first confirmed their engagement during an appearance on Late Night With Jimmy Fallon earlier this year. The couple met at a resort near Miami in 2009. "This girl came walking along with another lady, a slightly older lady," recalled Slater. I was sitting in my usual spot, eating my oatmeal... and this spot was famous for people proposing to each other. It was very, very nice. "So she's there, and the next thing I know, she gets down on one knee and proposes to this older lady," he said. I thought I had just witnessed a nice lesbian engagement, so I was coming over to say congratulations, but it turns out it was her aunt, and she was just trying to help her aunt capture the beauty and the romance of the moment. She was making a joke, and I witnessed it, and it intrigued me, and the next thing I knew, we were hanging out in the Everglades. This is Slater's second marriage. He was previously wed to Ryan Haddon (with whom he has two kids, Jaden and Eliana), until they divorced in 2006. Slater, who's been relatively quiet of late, will be seen in Lars Von Trier's upcoming Nymphomaniac.