Robert Pattinson mania hits London as hundreds of screaming fans gather

London's West End was besieged with hundreds of teenage girls last night as they clambered for a glimpse of their idol Robert Pattinson.The 23-year-old actor was greeted by screaming fans as he arrived for the Leicester Square premiere of his new film Remember Me.Some fans had camped out since Tuesday to get a prime position ahead of the star-studded screening. Big night: