Shakira insists she can prove her ex-boyfriend is lying in his $250 million lawsuit against her.

The 'Hips Don't Lie' singer is being sued by Antonio De La Rua, who claims he was not only her lover but business adviser during their 11-year relationship and is entitled to a cut of her fortune.

However, the Colombian beauty believes she can prove Antonio's allegations are false by providing emails in which he renounced any involvement in her business endeavours.

In the correspondence, submitted to Los Angeles County Superior Court, Antonio allegedly wrote: ''I am not a partner in any of your companies. You are the sole owner of all of them.''

According to TMZ, Shakira says the email is dated to 2011 - a year before her Argentinean ex-boyfriend filed his multi-million dollar lawsuit.

Antonio, who is the son of former Argentine president Fernando de la Rua, is suing Shakira on the basis that they made an oral agreement in 2004 promising him a stake in her fortune.

However, in court documents filed by the 36-year-old star, she claims the couple signed a 'relationship contract' in 2006 in which both parties agreed to ''renounce'' any rights to each other's future earnings.

Antonio alleges he was one of Shakira's business partners, as well as an adviser and strategist in her career, and helped build the ''Shakira brand''.

He also takes credit for talking the songstress into recording her global hit 'Hips Don't Lie' - which she initially ''hated'' - and says he helped put together her $300 million touring deal with Live Nation.

'The Voice' coach continued to work with Antonio in a business capacity following their split in 2010, but ended their working relationship in 2011.

Antonio suspects he was axed due to Shakira's budding relationship with soccer star Gerard Pique, with whom she welcomed her first child, son Milan, in January.