What singer-songwriter, born 30 October 1989, was in the British-Irish girl group The Saturdays which formed during the summer of 2007?
The Saturdays: The Saturdays was a British-Irish girl group based in London, England. The Saturdays:  The group formed during the summer of 2007. The Saturdays:  The line up consisted of Frankie Bridge, Una Healy, Rochelle Humes, Mollie King and Vanessa White.
i don't know