Question: When was the sixth studio album released in the United States by the first Australian pop music group to achieve major chart and sales success in the United Kingdom and the United States?
Sentence (from "Cheryl discography"): She was later asked to sing the female vocals on the UK release of the track, which reached number four in the United Kingdom and sold over 250,000 copies, giving the single a silver certificate by the BPI.
Relevant evidence: No