Angry Lindsay Lohan has hit back at US reports she and boyfriend Harry Morton have split, insisting the rumours are "not true."

Reports circulated on Friday that the Mean Girls star had been dumped by the Hard Rock Cafe heir because she was "too much drama."

Lohan has instructed her publicist to kill the rumour, claiming the couple is still an item.

Lohan and Morton began dating in July. Morton was recently photographed consoling his girlfriend after she had reported her handbag and jewellery missing at London's Heathrow Airport.