The only thing I can think, and I mean the only idea that comes into my head as I flip through these pictures, is that Jen Selter's ass is just so awesome that she can't do any kind of stretches with it trapped inside of her pants. It doesn't matter if Jen Selter is wearing workout pants, jeans, yoga pants, or lounge pants, and it doesn't matter the shape, the style, or the material - Jen Selter's ass is just that powerful.