BY2

By2 is a Singaporean duo composed of twin sisters Miko Bai and Yumi Bai. They gained attention with their first two studio albums, NC 16 and Twins, but it was not until 2010 when they released their third studio album, Grown Up, for which gained them significant popularity. The album was responsible for 33 percent sales of albums in the Chinese market and 18 percent sales of albums in Taiwan during the week of 9 to 15 April 2010.