The billboards are clearly a test run for Calvin Klein Jeans, given that they will be up for only a little more than a week.

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"This new way of building communities and sharing with one another is the way that modern movements will take hold, and social media is the medium that can connect these communities, not only at greater speeds and across boundaries, but in authentic and lasting ways, " said Kathy Calvin, CEO of the U.N.

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Her gorgeous sister Margaret Calvin Bowles followed a similar path, modeling and living the jetsetter life, though she married only twice.

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