Dayo Olatunji (born July 21, 1992), better known as Ms D, is an English R&B singer from London, England. She is known as being a featured artist for all three of Wiley's singles from his 2013 album The Ascent, and also known for her uncredited vocals on Chipmunk’s 2009 single "Oopsy Daisy". In 2012 she featured on Dependency by Charlie Brown Ms D was credited as a songwriter and backing vocalist for Iggy Azalea's 2013 single "Bounce"