'Bieber Fever' took hold in Dublin and London last night, as teen star Justin Bieber attended the premiere of his first film.
Hundreds of female fans -- one of whom had travelled from Peru for the event -- filled the entrance hall of London's O2 Arena to catch a glimpse of the 17-year-old, who stars in 3D biopic 'Justin Bieber: Never Say Never'.
Bieber, fresh from his success at Tuesday night's Brit Awards where he picked up the gong for international breakthrough act, turned up wearing a black waistcoat and bow tie with jeans, and sporting his now-famous hairstyle.
The 'Baby' singer said that he hoped people would be "motivated and inspired" by the film, which charts his rise from drum-playing toddler to international star.
He said: "All my fans have been amazing and supportive so I'm glad to be here."
A handful of lucky fans were reduced to tears after being handed tickets to see the film.
In Dublin, meanwhile, fans who turned up for last night's film premiere at Cineworld on Parnell Street had to make do with a cardboard cut-out of the star who was thrilling fans in London.
Businesswoman Karla Elliott -- former wife of Def Leppard singer Joe Elliot -- returned to the social scene for the premiere last night. The former model has been embroiled in problems surrounding her now defunct business after claiming she cannot afford to pay staff wages.
Fans who attended the Irish premiere included Karla Elliot, models Gail Kaneswaren and Georgia Salpa, boxer Bernard Dunne with his daughter Caoimhe, socialite Lisa Fitzpatrick and Morah Ryan.