Sad news. From the Guardian obit:
Styrene, who was born Marian Joan Elliott-Said, shot to fame in 1976 with X-Ray Spex, and was immortalised in punk history with the song Oh Bondage, Up Yours! "Little girls should be seen and not heard," Styrene would say to introduce the track. X-Ray Spex released one album, the acclaimed Germ Free Adolescents in 1978, before Styrene left the group.
Despite her relatively short stint with the band, Styrene's overt feminism and mixed-race heritage marked her out among her punk contemporaries and won her legions of fans for generations to come. Beth Ditto, singer with Gossip, said: "Poly Styrene [was] so ahead of her time. She recreated punk."