Eminem and Rihanna Hold on to Top of U.s. Singles Chart

But Perry has something else to cheer her up - her follow-up release, Teenage Dream, is a new entry at 20.

Elsewhere on the countdown, Taio Cruz is Dynamite at three after swapping places with rapper B.o.B. His duet with Paramore's Hayley Williams slips to number four, while Travie McCoy's Billionaire rounds out the new countdown at five.