The former N-Dubz singer Dappy has been fined £800 for slapping a man outside a nightclub.
George Chittock was attacked by the singer after an event at Chicago's in Chelmsford on 27 February.
Dappy, 27, of St Albans, Hertfordshire, was at Chelmsford Magistrates' Court under his real name Dino Costas Contostavlos.
Mr Contostavlos was also told to pay a victim surcharge of £80 and costs of £930.
During the trial, his friend, comedian Jim Davidson, attended court in a show of moral support.
Outside court, Davidson said: "Dappy is a good friend of mine. I don't know what's happened in this case but I'm just here to show him my support."
Davidson had offered to be a character witness, but Dappy's legal team declined.
Bench chairman Angela Tucker said the magistrates found Contostavlos was not under any physical threat at the time of the incident.
He held his head in his hands as the guilty verdict was delivered.
Mr Harrison, mitigating, said: "It was no doubt a regrettable incident but one that was over very quickly and left a person red faced and very, very angry.
"He is a polarising figure who is clearly liked by a great many people but he is equally disliked by many others."
The court was read details of Contostavlos's criminal record, including a six-month suspended sentence for affray and assault in February 2012.
A trial last year heard how he sparked a "mob-handed attack" when he spat at Grace Cochran and Serena Burton, who were both 19, at a filling station in Guildford.