The Slits frontwoman Ari-Up died yesterday at the age of just 48 after suffering from a serious illness. Born Arianna Forster, she was best known for her work with the all-girl punk band, who reformed in 2005 after a 23 year break.

The announcement was made by Sex Pistol Johnny Lydon, who was also Ari-Up's step-father, via the PiL website. He did not explain the nature of Forster's illness, merely said, "John and Nora have asked us to let everyone know that Nora's daughter Arianna (aka Ari-Up) died today (Wednesday, October 20th) after a serious illness. She will be sadly missed. Everyone at and would like to pass on their heartfelt condolences to John, Nora and family. Rest in Peace."

The Slits last year released 'Trapped Animal', their first album since reuniting and since 1981's Return of The Giant Slits'.