"Girlfriend", the first single released from the album, was produced by Dr. Luke and was a global success. It reached No. 1 on the US "Billboard" Hot 100. The single also reached number one in twelve other countries across the world including Australia, Canada and Japan. It was also the top selling song of 2007 worldwide. The accompanying music video broke YouTube records, becoming the most watched video of all-time by July 2008. It holds the record as the first video on YouTube to reach 100 million views. There was also a remix of the song featuring rapper Lil Mama.