The last original member of all-girl-group the Sugababes left the band, it was revealed.
Keisha Buchanan, 24, will now launch a solo career, a statement from the group confirmed.
Buchanan will be replaced by the UK's Eurovision Song Contest singer Jade Ewen.
A statement on the band's website read: "The current line-up of the Sugababes has disbanded.
"Heidi Range and Amelle Berrabah will continue as the Sugababes and will be joined by new member Jade Ewen.
"They release their album Sweet 7 on 23 November through Island Records.
"Keisha Buchanan will continue to record for Island Records as a solo artist."
The group have recently been subject of media speculation after Amelle Berrabah reportedly went missing two weeks ago.
Buchanan defended herself against reports she was the troublemaker of the band.
A report in The Sun claimed bandmate Berrabah was missing following a disagreement with Buchanan after she failed to perform with her and Heidi Range at London's Movida.
But Buchanan, 24, tweeted: "I may come across as a hard nut sometimes, but I'm actually really sensitive and it destroys me to think people see me as the longest standing member and assume that I'm the b***h who causes people to walk, and it's totally untrue and unfair."
The group was formed in 1998 by original members Buchanan, Mutya Buena and Siobhan Donaghy.
Range replaced Donaghy in 2001 and in 2005 Buena was replaced by Berrabah.