Published Wednesday, 12 February 2014
Former N-Dubz singer Tulisa Contostavlos. (© Getty)
The former X Factor judge is accused of punching a music blogger at V Festival last year.
The 25-year-old appeared at Chelmsford Magistrates' Court in Essex to face one count of common assault.
Her assistant Gareth Varey is also accused of threatening behaviour, which he denies.
The singer's spokesman Simon Jones said: "Tulisa has been charged with an offence of common assault, and her PA Gareth Varey with an offence of threatening behaviour.
"Today at court Tulisa and Gareth entered pleas of not guilty to these unfounded allegations and they both look forward to demonstrating their innocence at the forthcoming trial."
© UTV News