Knock You Down (feat Kanye West & Ne Yo) Sin... Info

: As of April 2011, the single had sold over 2.1 million digital copies in the United States.

The song remains one of Keri Hilson's most significant commercial achievements: Knock You Down (feat Kanye West & Ne Yo) Sin...

: It reached #3 on the Billboard Hot 100 and topped the Hot R&B/Hip-Hop Songs chart in the U.S.. Internationally, it hit #1 in New Zealand and reached the top five in the UK and Ireland. : As of April 2011, the single had sold over 2