RihannaIt's no surprise that celebrities dedicate an uncanny amount of time and money to staying fit, and for hip-hop's reigning princess Rihanna, things are no different. The Barbadian singer has always been open about her intensive workout regimen, but a new lawsuit will give her public a little more insight on just how much money it takes to stay fly.

Los Angeles based trainer, Cindy Percival filed a lawsuit against Rihanna in a L.A. Country Superior Court last week, claiming that the singer has failed to pay off her training tab. According to Percival, Rihanna owes her more than $26, 000 for "exclusive personal training" in 2009. The trainer says she was scheduled to receive a daily sum of $1, 500 to cover her work from September and October of 2009, but the money never came her way. In addition to local training, Percival says that she was also required to travel overseas with the singer, which added an extra $2, 644.14 in travel expenses.

Rihanna's reps have not released any comment on the lawsuit as yet. Looking good doesn't come easy.