Bieber Fever is gripping Dublin.

Beliebers are camping outside the O2 showing their devotion to the Beebs, 'Justin' case they might get a glimpse of their hero before his gig tonight.

It is his second night on stage here with the teen superstar playing to a packed crowd at the venue last night.

Fans have been queuing outside the O2 since last night even sleeping on benches in the hopes of catching a glimpse of him.

He played to a packed crowd at the venue last night and will play a second concert this evening.

We have been checking out the Irish Bieber Army who were crying at the thoughts of being in the same room as their idol.