The N-Dubz star has posted a five minute video on her official YouTube channel where she speaks openly about the clip.
In the clip, Tulisa says she wants to "set the record straight" about the footage, which she confirmed as being "between [her] and an ex boyfriend having an intimate moment.”
She explained: “As you know I have never been the type – regardless of being in the public eye – to sit down and keep my mouth shut and be quiet about anything, especially when I have done nothing wrong whatsoever.”
“I’m just going to start from the beginning," Tulisa says, before explaining to viewers about her relationship with the man in the tape, Justin Edwards aka MC Ultra.
The 23-year-old goes on: "I never expected a scenario like this. I can be honest, this isn't unexpected for me. I got a call six months ago that apparently he has has been threatening to bring out this footage.
"I confronted him on this situation and he lied, and here we are today, and the footage is circulating online."
Watch the clip below...