What's the new "It" bag for the summer?

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I don't know, each brand seems to have something for each season that is a must have for lovers of the designer/brand. Right now I can't think of any one bag that I have seen in the mags.
 
The last one I remembered being seen all over was the lv murakami in white on celebs. I think jessica simpson went nuts over it on her old show. But now I agree with everyone else: choose your own it bag!