The Umbrella hitmaker has accused bosses at New York firm Berdon LLP of neglecting to properly manage her cash flow and expenses, uncover millions of dollars in unpaid royalties, and dissuade the beauty from purchasing a luxury home in California during her financially-straining Last Girl on Earth tour in 2009.

The 24-year-old has also taken aim at her former financial advisors for allegedly failing to file her tax returns, resulting in the superstar becoming an audit target for officials at the US Internal Revenue Service. The R&B singer dropped the accounting firm last September after six years.

Rihanna, pictured, real name Robyn Fenty, lodged the legal papers at the Manhattan Federal Court on Thursday, and an excerpt obtained by the New York Daily News reads: "Despite having earned millions of dollars in revenues during Berdon's tenure, Fenty learned that her net income after payment of expenses and exorbitant commissions to the defendant was a fraction of that amount."

She is seeking unspecified damages over a number of claims, including breach of contract and negligence.