Hilary Duff's business manager has refused to let her buy her dream - a Porsche - as the singer-actress is not very good behind the wheel.

The 19-year-old revealed that the manager has banned her from buying the car because he thinks she was a ‘terrible driver’.

"The car I want is a Porsche Cayenne Turbo. But my business manager doesn't want me to buy it - he says that I'm a terrible driver and don't need that kind of car,” Duff said.

The ‘Lizzie MCGuire Movie’ star, who had earlier admitted her poor driving skills, insisted that she met with a ‘little accident’ once as she was on phone, but the manager was very particular about her being more careful.

"The other day I had a little accident because I was driving while I was on the phone. It was just a tap, nothing serious, so I thought, I'll keep going it's fine, whatever. But my business manager told me, 'You have to be careful, because people will sue you.' So I need to be cautious,” she said.

Earlier, Duff had revealed that her pals were scared to sit in the car while she was on the driver’s seat.

“Everyone is scared to get in the car with me. My garage sometimes jumps out at me,” she said.