This article describes an album in the UK Now! series. It should not be confused with similarly or identically-titled albums belonging to different "Now!" series. For more information, see List of Now That's What I Call Music! albums.
With the Seamus Haji's write up, at the end it says: "which looks set to storm the charts in late March 2006" even though the album was released in 2007.
JoJo is actually sixteen, and not fifteen. She was born in December 1990, which makes her sixteen upon the release of this album in April 2007.
Additional Information
The Track Glamorous by Fergie/Ludacris was originally going to be on Now 66, but was left for 67, apparently this is because they didn't have a censored version when Now 66 came out.