In court papers he claims a group of bloggers are pretending to be him.

In new court papers obtained by ET, Aerosmith frontman Steven Tyler sues a group of people he claims have impersonated him and his girlfriend on Internet blogs.

The papers allege that the impersonators post "online diary entries" that "disclose private thoughts and details" about the singer and his girlfriend's life.

The complaints Tyler brings against the defendants in the papers include public disclosure of private fact, false light and common law misappropriation of likeness.

Click here to read the court papers.