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It all began at last month's Billboard Music Awards, where Katy complemented her purple-tinged hair with this lovely lilac gown by Blumarine—and didn't look anything like a grape. The transformation begins.... Click through to shop the look.

How cool is this two-tone jumpsuit she wore onstage at the MuchMusic Video Awards earlier this month? What appeared to be a lace long-sleeved top and wide-legged trouser combo was, in fact, a one-piece—and a flattering, leg-lengthening one at that. Click through to shop the look.

Channeling The Great Gatsby's Daisy Buchanan—albeit with far more interestingly-colored curls—Katy wore this vintage apricot silk slipdress by Nolan Miller, a jeweled headband and looped pearls to a City of Hope event several weeks ago. She finished off her look with crystal-embellished Manolo Blahniks—and while a bit costumey, you've got to admit the lady looks gorgeous. Click through to shop the look.

Katy traveled to London for an advance screening of Part of Me, and chose this adorable map-printed dress from Carven's Resort 2012 collection for the occasion. We want it in our own closet likerightnow. Oh, and we'll take some popcorn, too.Click through to shop the look.

In what's surely our favorite Katy Perry look to date, the singer wore this stunning red and navy Roland Mouret dress from Spring 2012 for her recent appearance on The Tonight Show With Jay Leno. From the glamorous sideswept waves to her towering ankle-strap platforms, everything about this ensemble is perfection. Well played, Perry. Click through to shop the look.