N-Dubz rapper Dappy, who was found guilty of assault and affray, has lost a challenge against his conviction.
The 25-year-old singer was not at the Court of Appeal in London to hear three judges headed by the Lord Chief Justice Lord Judge reject his case.
At Guildford Crown Court in February, the pop star, whose real name is Costadinos Contostavlos, was given a six-month sentence, suspended for 18 months, in connection with a brawl at a petrol station.
He was also ordered to carry out 150 hours of community service.
His co-defendants, Kieran Vassell - the brother of Dappy's partner Kaye Vassell - and songwriter Alfred Miller both lost appeals against their sentences.
Vassell, 25, of Hammersmith, west London, who denied affray and said he only acted to protect Dappy, was found guilty and jailed for 14 months.
Miller, 28, of Brentford, west London, pleaded guilty to affray and was sentenced to 19 months.
Mr Justice Royce said neither sentence was manifestly excessive in what was a serious affray.