LINDSAY LOHAN has fuelled rumours her relationship with fitness trainer JOSH CHUNN is growing serious after he joined her on a trip to London.

The Mean Girls star jetted into the British capital over the weekend (29-30Dec12) to ring in the New Year, and brought along personal trainer/model Chunn, who she was romantically linked to in November (12).

The pair enjoyed a night out at Nozomi restaurant on Wednesday night (02Jan13), and tried to cover their faces as they left in a chauffeured car together.

Lohan spent New Year's Eve (31Dec12) at a lavish bash thrown by Brunei prince Haji Abdul Azim at The Dorchester hotel, and was paid a reported $100,000 (£62,500) to attend, according to the New York Daily News.