Question: Which co-host of the broadcast event of "Children in Need 2015" is best known for her work in pop groups S Club 8 and The Saturdays?
Sentence (from "Rochelle Humes"): Humes has achieved six Top 10 hits with S Club 8 and thirteen Top 10 hits with girl group The Saturdays, including number-one hit "What About Us".
Relevant evidence: No