if the song itself wasn't enough, after seeing the video it's pretty clear Katy/the machine behind her are aware who Katy's main audience is (very, very young, Barbie loving girls) and they gearing her towards them full-steam.
that's interesting. Because since Katy is older, there won't be any need for her to 'sex up' her image, so I wonder how long/far she will be able to go w/ the younglings?