As Shawn Johnson, Tyler Perry and Britney Spears can attest, it's been a busy month for stars and their insane stalkers. Your next victim? Tyra Banks.

Banks took the stand today in Manhattan to testify against her accused stalker, Brady Green. The nut job is on trial for stalking, harassment and criminal trespassing stemming from an incident in March of last year.

According to the New York Daily News, the America's Next Top Model host was calm as she told the court how terrified she and her staff were when Brady Green attempted to get past security at the Tyra Banks Show.

The staff wouldn't allow Banks to exit her dressing room.

"'Stop! No! You can't leave,'" she claimed they said. "I know I have fans, but I've never in my entire career had my staff act in this way."

The scary incident has left the 39-year-old Banks shaken to this day: "I fear for my safety," she said. "I feel extremely vulnerable."

Prosecutors say Brady Green even threatened to slash a Tyra Banks employee's throat when the person refused to give up the studio address.

"I don't fear for my life - I fear the safety of my staff," Banks explained. "I fear the safety of my family. I fear the safety of people in my vicinity."

She admitted that since Green's phone calls, love notes and appearance, she has heightened her security, even when she goes for a run.

The defendant's lawyer noted that the star's website urges viewers to write her. But Banks says Green was more aggressive than the average fan.

If convicted, Green faces a maximum of 90 days in prison.