Katy Perry [1] is back with new music, and we're still just as obsessed with the bubblegum pop star. It's been a pretty jam-packed year for Katy so far — she released two catchy singles [2], she got engaged to Orlando Bloom [3], and was a judge on American Idol. All the while, though, she's continued to channel that signature sex appeal [4] we've come to expect from her. As we patiently await the rest of Katy's year — which may or may not include a brand-new album — we're looking back at just how much has changed since she first popped up on the scene in 2003.
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