First find out if she is right or left handed. Once you find this out, you will likely know which one of her eyes is her dominant. This will be important in a bit. Next, run to your closet Dicks,Academy,or whatever you local sporting goods store is. Tell a store worker that you are starting an advanced yoga/pilates combo class where the poses are extreme and you need the tightest, most flexible,stretchy yoga pants that they have. Buy them a size or two smaller than you think you wear. Go home and immediately change into them. To multiply to the odds that her eye sight stays glued to your "toe" position your "toe" to the opposite side of what handed she is. Example: She is right handed (right eyed dominant), position your "toe" to the left of the seam. She will be facing you dubmass. If she looks and smiles,winks, or ask you to show you the barn out back you are all good. Thank me later.
This is all assuming she isnt your family and you want to grind for your state. Also this would make you a perv, but if she is family and you posted this for "advice" you are a sick,sick perv