(Credit: Kevin Mazur/WireImage)
+ Jay-Z will be opening the Australian leg of U2's 360 Tour. (Spinner)
+ Katy Perry didn't just perform an epic set on "The Late Show With David Letterman" last night; she also chatted with the talk show host about Russell Brand and church -- two subjects with TONS in common! (NeonLimelight)
+ After coming under fire from the likes of Bill O'Reilly, Kim Kardashian has come out in defense of her photo shoot with Justin Bieber. (MTV News)
+ Not only is Rihanna putting the finishing touches on a new album, she will reportedly release a new single, "Only Girl," at the end of the month. (ThatGrapeJuice)
+ Billy Joel will allegedly be one of the artists whose catalog is featured on an episode of "Glee" this season. (AccessHollywood)