Justin Timberlake has always steered clear of legal trouble, but you can't say the same for his family. His aunt has been busted for stealing tens of thousands of dollars -- from JT's parents!

Jane Harless-- whose brother Paul married Justin's mother when the singer was five-- was arrested last week on charges that she forged more than 100 bad checks. She allegedly scammed about $64,000 from the couple over a two-year period starting in 2011.

For the record, Paul Harless is a part-owner of the Memphis Grizzlies basketball team, as well as the golf course that Justin owns in Tennessee.

Source: TMZ