Credit: George Pimentel

In Stores: Tuesday 8/24

Us Rating: *** 1/2

Katy Perry's sophomore disc has already spawned two summer anthems -- the ubiquitous "California Gurls," and "Teenage Dream." With good reason: This scrumptious upgrade of 2008's One of the Boys is a bounty of kindred confections, especially the "I Kissed a Girl"-esque bravado of "Last Friday Night (T.G.I.F.)," in which she muses on a menage a trois. (Capitol)