The might be PI's - I have an older pair that is cut, well, strangely. They are really low in the front (maybe not quite as low as hers.....), but they do go up far enough in the back to not show any skin between shorts and shirt. It's definitely not the most comfy cut for shorts - I want to keep pulling them up....
I also note that they (the shorts) have a very short inseam (they look kind of like PI sugar shorts) - which also can be quite uncomfy - if the leg gripper rubs your saddle.... ick. Meant to look cute and not leave the typical cyclist tan line- or rather at least leave it higher up, but not the most comfy for long rides.