Blue and white stripes with red accents has been done for years.
How about this new twist on the summer sailor:

Urban Outfitters throws in unpredictable colors for this style: green with oversized red buttons. But with small pleats, the dress is flowy enough to not look rigid and military, as you might expect with green and double-breasted buttons. The babydoll shape makes me want to visit of pier. Of any kind. Just a pier.

$118, www.urbanoutfitters.com.

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