Niia Bertino (born 11 July 1987), better known simply by her stage name Niia, is an American singer, pianist, and songwriter. As a singer, Niia was recognized at a young age by the National Foundation for Advancement in the Arts as one of the top jazz singers in the United States. She is best known for her feature on the 2007 hit single "Sweetest Girl (Dollar Bill)," with Wyclef, Akon, and Lil' Wayne, which was certified Platinum by theRIAA and peaked at #10 on the Billboard Hot 100.