The "Love & Hip Hop" sex tape has overtaken the Kim Kardashian skin flick in popularity -- in fact it's already the most pirated sex tape of all time .... according to the porn company behind its release.
The full length L&HH sex tape was officially released at midnight -- and a rep for Vivid tells TMZ ... in just 9 hours, the company sent out more than 1,200 cease-and-desist letters to websites that were illegally hosting it.
Vivid honcho Steve Hirsch isn't messing around either -- telling us, "If you even try to illegally download this tape we will come after you full force. We have three full-time attorneys prepared and ready to go."
As we reported, the anticipation leading to the tape's release has been insane -- pre-sale numbers were through the roof ... totaling roughly $400,000.
Since the release at midnight, we're told Vivid's website has been raking in new memberships -- averaging 15 new joins every MINUTE.