The Guess Spring 2011 campaign is loaded with fun black and white pictures. The spread features models Elsa Hosk, Alyssa Miller, Kate Upton and Silviu Tolu, all photographed by Ellen von Unwerth. The Guess Spring 2011 campaign has a retro beach theme which is actually quite popular this season. The doe-eyed models can be seen in pretty white dresses, chunky jewels, high-waisted shorts and tiny midriff-baring tops.