Security step in to protect Big Brother star

Aisleyne Horgan-Wallace was jumped by a mystery fan at a film premiere last night.

The unidentified man, who wore a hooded top, grabbed the Big Brother star from behind at Covent Garden screening of Pimp.

Aisleyne, 31, looked terrified as she struggled to get free.

Fortunately, security quickly stepped in and managed to pull the fan off.

SEE PICTURES! Fan jumps Aisleyne Horgan-Wallace here>>