British girl group Atomic Kitten are set to reunite for one night only. The trio, comprising Natasha Hamilton, Jenny Frost and LIZ MCCLARNON, announced they were "taking a break" in 2004 after four years in the charts. However, they will reunite this month (NOV06) to sing at a concert in support of Liverpool soccer fan MICHAEL SHIELDS, who has been jailed in Bulgaria for the murder of a barman last year (05). Shields, 20, denies he killed the man. The proceeds from the concert will help Shields pay his Bulgarian court fine.