According to TMZ, Rihanna is being sued by a former trainer Cindy Percival who claims the songstress owes her $27,000!

Trainer Cindy Percival says Rihanna owes her for several weeks of intense training between September and October of last year. And at $1500 a day, it added up!

She is also asking for $2,644.14 in travel expenses, claiming she traveled all over Europe with Rihanna to keep her in great shape.

Rihanna´s camp hasn´t commented.