I Kissed a Girl is only an EP.
 "Only Girl (In the World)" was Rihanna's twelfth number-one on the Dance Club Songs songs chart and number 46 on the 2010 Billboard year-end chart
 "Only Girl (In the World)" appeared on the Billboard Hot 100 year-end chart in 2010 and 2011 at numbers 47 and 40, respectively

