As with any pseudo-adolescent fashion trend, a complimentary You Tube video is required. So while reading Network Partner, Cuffington's blog post on the tessellation patterns seen in the Marc by Marc Jacobs menswear collection, she rounded up a video that could have only been produced for high school Geometry students. Yes, it is that good. Aside from her funny findings, Cuffington rightly points out a trend that can come under the heading of geometric, although tessellations, as she points out, have no gaps and no overlaps in their patterns--so technically they deserve their own analysis. Below, we've rounded up some summer tessellation patterns (we had to sift through the search term 'geometric' to find them--if that should give you an idea of their position as being a trend within a trend) on frocks and whatnot. It's Thursday, go get goofy.