RITA Ora has been forced to pull out of a festival performance after being rushed to hospital with a sudden illness. The pop star, 33, was set to perform at the electronic music event Campus Fesztivál in Hungary tonight - but issued a last minute health update on Saturday afternoon. The star told fans she had spent the night in a Budapest hospital.

Rita shared an Instagram post, which read: "Please forgive this unexpected turn of events but sadly I will not be able to perform at Campus Fesztivál tonight. "Having spent the night in hospital in Budapest, I must rest thoroughly and follow doctor's orders." Rita did not elaborate on the reason for her hospital visit, but thanked her fans for their continued support.

The Hot Right Now songstress added: "I am so sorry to my fans who are going to be there today and I'm truly thankful for your understanding." The open-air music festival takes place between the 24th and the 28th of July with hundreds of concerts and DJ performances. Rita was set to perform alongside a number of international artists like Dimitri Vegas& Like Mell, Gayle, Martin Solveig and Danko Jones.

It comes after the star performed in a silver bra and pink bikini bottoms over tights at the As Young As Vilnius Festival in Lithuania. Rita said: “50,000 people, in the pouring rain, I appreciate every single one of you.” The free bash celebrated the 701st birthday of the city.

It's not the first time the singer has been wowing fans, she recently went braless in.