By Victoria Johns Cara Delevingne has told trolls she’s still sober after being accused of being “coked up” at the Met Gala. The Suicide Squad star, 31, rocked up on the red carpet on Monday in New York sporting a striking diamond-strewn hood and was joined by Ed Sheeran and Stella McCartney. As Cara began talking to an interviewer, Ed and Stella quickly stepped in and started gushing about their outfits, however some thought the pair were “saving” the model from the interview because she was “coked up”. Responding to the now viral video on Instagram one fan wrote: “They’re saving her from rui…