"Check on It" is a song recorded by American R&B singer Beyoncé Knowles, featuring American rapper Slim Thug. It was composed by Knowles, Swizz Beatz, Sean Garrett, Angela Beyincé and Slim Thug. Initially recorded by Knowles only, the song was supposed to be featured on the soundtrack album for 2006 film The Pink Panther, in which she co-stars. As it was ultimately not included on its soundtrack album, the song with additional vocals from Slim Thug was placed on the 2005 Destiny's Child's greatest hits album #1's. Columbia Records released "Check on It" in the United States on December 13, 2005.