Complex sentence: Goldie had the first successful all-girl band, Goldie & the Gingerbreads, who were the first all-girl rock band in history to be signed to a major label and climb the charts.
Split into simpler sentences: Goldie had the first successful all-girl band, Goldie & the Gingerbreads. The first all-girl rock band in history to be signed to a major label and climb the charts.