Justin Bieber's fans can go to any extent to reach him. London's Royal Garden Hotel, where the singer is staying, received more than 2000 calls from his admirers."Many have come up with imaginative fake identities in an effort to convince staff, including using names of the singer's relatives, friends from home... and one even claimed to be Justin's personal stripper," reported The Sun.To stop the calls, the hotel was forced to change their phone number."Justin's fanbase are relentless - they will do anything to get near him. The phones in the hotel haven't stopped ringing since he arrived. Staff knew there would be pandemonium but not to this extent," a source told the tabloid.The singer also gave his admirers a glimpse of his six-pack abs from his hotel room's window. Justin wrote on Twitter: "Eating a steak and gonna get a good night's rest and relax. I hear you guys outside the hotel... and I LOVE YOU!" Such is the Baby singer's fan base!