Cheeky! Robbie Williams signs a female fan's bottom on stage after she holds up poster requesting to get his autograph tattooed

He's known for being a bit cheeky himself but now Robbie Williams has gone one step further - by signing a female fan's bottom.
The Take That star pulled Lone Martinsen up on stage during a concert in Gothenburg, Sweden, in front of 65,000 fans and scribbled his signature across her pert backside after he spotted her saucy poster asking him to put his mark on her.
The 39-year-old singer saw the message, which read: 'Please sign my butt so I can tattoo it,' while he was performing on his Take The Crown tour.

Cheeky: Robbie Williams signs a female fan's bottom on stage in Sweden after she holds up a poster requesting his signature so she can get it tattooed

Robbie then told his enthusiastic follower to come up to the stage and bare her bum, which she happily did after pulling down her hotpants.
While on stage Robbie held up the sign so all could see it before bending down with a marker pen to scribble on her derriere.

Lone later claimed on her Facebook page that the pop heartthrob told her: 'Your ass is amazing.'

Spectacle: After spotting the sign, Robbie brought fan Lone Martinsen on stage in front of 65,000 fans to sign her derriere

However, the 22 year old admitted she had a restless sleep after the gig, fearing she would smudge the autograph before getting the chance to get it permanently inked on her rear.

She said: 'It is fantastic. But I had a sleepless night though as I dared not shower and it was very hot.
'I've been a big fan for 12 years. To meet him is completely unreal.'

Let Me Entertain You: Robbie has spent the last few days in Sweden on his latest tour stop

Robbie - who welcomed his first daughter, Theodora, into the world in May 2012 with his wife Ayda Field - is keen to tour more because he "really loved" being on the road for his latest gigs.
An insider said previously: 'Robbie didn't want to commit to too many dates at first as he's struggled with touring in the past.
'But he has really loved it this time around and doesn't want the whole thing to end.'