Taylor Swift's mum wanted to prevent alleged groping photo from going viral

DENVER - Recording star Taylor Swift's mother testified on Wednesday that she became sick to her stomach when she learnt her daughter had been groped during a pre-concert photo shoot four years ago, but they decided against calling the police to avoid publicity.

"I did not want this event to define her life," Andrea Swift said in the second day of testimony in a federal court trial stemming from the Grammy-winning singer's allegation that a Denver DJ fondled her bare buttocks at the picture-taking session.

Swift's mother said on the witness stand that one specific worry was the prospect that the photo taken with the radio personality in question, David Mueller, might end up going viral and even being doctored in a lewd way.

​"I was very upset...I felt like I wanted to vomit," she testified when asked to recall her reaction to her daughter telling her that she had been groped at a reception for her fans before a June 2013 concert in Denver.

"'Mom, a guy just grabbed my ass at the meet-and-greet,'" she recounted her daughter telling her moments after the alleged incident.

Mueller, who lost his job at radio station KYGO-FM over the encounter with Swift, insisted under oath on Tuesday - the first day of testimony - that he was innocent of any inappropriate behaviour and a victim of false accusations.