'Basketball Wife' Legal Threats Over Chris Brown Sex Tape Allegations

"Basketball Wives L.A." star c  is telling friends she NEVER, EVER filmed herself having sex with Chris Brown ... and now she wants to sue someone's ass over reports that such a tape exists.

Draya and Brown dated for roughly nine months back in 2010 ... but we're told the reality star is adamant that they never filmed their sexual exploits ... not once.

Now, sources close to Draya tell us ... she's already contacted lawyers, hoping to take action against whoever is responsible for spreading the "false information."

As for Chris -- his reps also claim the reports are completely bogus.