Lily Allen hires £80-an-hour personal trainer, for her face

Lily posted a photograph of herself at the Face Gym in central London alongside the caption: "Putting in the hours @face_gym #tiring (sic)."

Customers are offered half-hour £40 treatments which include a warm-up, cardio, advanced training and a cool down.

They can also seek help for specific problem areas including the scalp, brows, cheeks and jaw.

Face Gym founder Inge Theron told the Daily Star newspaper: "Face Gym is grounded in the principle that we don't think twice about toning our muscles at the gym so why think differently about the face?

"Face Gym goes beyond the skin - our face trainers work deep into the muscles around key problem areas such as jowls, eyes and foreheads."

The 'Hard Out Here' singer has signed up for the training sessions two months after celebrating her 30th birthday in May.

Meanwhile, Lily was reportedly treated by paramedics after collapsing at Glastonbury last month and was spotted smoking a suspicious looking cigarette at London's Wireless Festival just days later.