Justin Bieber is recovering in hospital after he fainted during his gig at the O2 Arena last night.
He posted a picture of himself on Instagram from his hospital bed and said he was "getting better listening to Janis Joplin."
Justin Bieber's visit to London has included illness, a late appearance and now fisticuffs after the pop star lashed out at a photographer.
Justin Bieber apologised to his young fans and their furious parents today after he turned up late for his concert last night.
Justin Bieber angered fans by showing up nearly two hours late for his London concert last night - but he's not the first musician to do so.