Lindsay Lohan's representative has vowed the actress will get her accounts in order after she was hit with a tax lien, insisting the star was 'unaware' she owes money.

The Mean Girls actress, who recently earned $1 million to strip for Playboy, owes the Internal Revenue Service $93,000 from 2009.

According to the star's spokesperson, the actress was not aware of the amount she owes as she recently changed her business team, who kept her affairs in check.

The rep tells TMZ.com, "Lindsay was completely unaware of the problem... the issue will be handled immediately."

The troubled star has had a bad start to 2012 - the tax lien came at the same time as a lawsuit from a paparazzo who claims to have been injured by the actress' car as her assistant drove her away from a Los Angeles club in 2010.