Kathleen Anne Brien (born 8 May 1989), better known as Katy B, is an English bassist, singer and songwriter. She is a dubstep, R&B, funky, house and garage artist and has also performed under the name Baby Katy. She released her first single with the label Rinse in 2010. The same year, she completed a degree in Popular Music at Goldsmiths, University of London. She was nominated for the 2011 Mercury Prize.