Karissa Shannon Admits to Heidi Tape, Threatens Spencer

Posted Sunday August 22, 2010 10:56 AM GMT

In an update on the Heidi Montag/Spencer Pratt sex tape drama, further details regarding the material in Pratt's possession has been revealed.

According to TMZ, Spencer stumbled upon a tape showing Heidi romping around the sack with Playboy twin Karissa Shannon - which is what led him to approach Vivid Entertainment for a big payday and plenty of headlines.

Confirming that such a tape does exist, Karissa told TMZ that she did indeed film herself getting freaking with the former "Hills" hottie - though she's unsure that Spencer actually has the steamy material in his collection.

Nonetheless, Miss Shannon has joined Miss Montag in threatening a lawsuit if Pratt goes ahead with his moneymaking agenda.

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