Tulisa Leaked Photos Contostavlos - Tulisa, 23, needs damages for breach of confidence and privacy when the video of her performing a sex act (oral sex) went up for sale on the web.
Tulisa got a High Court injunction to ban the tape last week.
The devastated beauty says Edwards is that the man within the six-minute video. however he denies her claim that he leaked it.
Edwards has been in hiding since the sex tape storm erupted and has been bombarded with abuse on Twitter by Tulisa fans.
The legal papers were served at a house where his mother lives in West Hampstead, North London. He wasn't there at the time.
A supply near Edwards, who calls himself MC Ultra, said last night: "She's suing for up to 100,000 ($152,000). This latest move by Tulisa has very unnerved and unsettled him.
"It's serious stuff and he is need to take it seriously. it is a ton of pressure for him."
A legal supply said: "This is an uncommon case, in that the injunction was granted when the fabric became public, not before. It entitles Tulisa to hunt damages."
An application to increase Tulisa's emergency injunction are heard at the High Court in London these days.
The 'X Factor' choose says she has been "in bits" when former partner Justin Edwards - conjointly referred to as Ultra - place intimate footage of them along on-line thus determined to post a video on YouTube to talk of her hurt and humiliation.
After naming Justin because the mystery man within the raunchy tape, the 23-year-old beauty said: "As you'll be able to imagine, i am devastated, heartbroken and i have been in bits for the past few days.
"When you share an intimate moment with somebody that you just love, that you just care concerning and you trust, you never imagine for one minute that that the footage might at one purpose be shared with the remainder of the united kingdom or perhaps individuals round the world, thus as you'll be able to imagine, it is a pretty powerful time on behalf of me.
"But i do not feel I ought to be the one to require the warmth for this or take the stick. he is the one that took it upon himself to place it on-line and he is currently sitting in silence pretending that it isn't him on the tape when it's. i am not reaching to sit here and be violated or taken advantage of by anyone."
The N-Dubz singer says she determined to talk out as a result of she had been thus betrayed by Justin and wished everybody to understand who was behind the leaking of the tape.
She said: "I wished to line the record straight and i have been deeply betrayed by somebody that I loved.
"Justin Edwards aka Ultra, who is my ex-boyfriend, has place it on-line and is that the different person on tape thus please choose the each folks. however i would wish to say, after you choose somebody, it does not outline the person you're judging, it defines you."