The 18-year-old singer is being sued by an unnamed person - who claims to be the real biological father of the `Baby` hitmaker`s girlfriend Selena Gomez - for the alleged theft and has also been accused of using the card to pay for an abortion.

According to TMZ.com, the lawsuit reads: "Bieber has cost me $426.78 and never paid me back.

"This was used as abortion money because Justin Bieber got my daughter Selena pregnant in my bedroom, on my Canadian bear rug.

"[He] gave Selena an STD and also got a penis enlargement with my stolen American Express card."

The Michigan citizen - who claims Justin has cheated on Selena with Rihanna, Penelope Cruz and Ke$ha - has also claimed in the suit that Justin`s mentor Usher sexually abused him with a firework.

The legal documents state: "Usher Raymond came to my house on the forth of July 2012 and sodomised me with a firework and lit it inside my anal area while blaring kate perry firework song in my ear drums. (sic)"
sections: Celebrities