This is really not what the time machine was created for. The Doc would be so disappointed that you would use it just for personal gain and pleasure. Who cares though? You don't! Show her that you have the 1.21 gigawatts needed to send her back in time with this T Shirt.
As a mechanic and movie buff, this T Shirt couldn't be more perfect. No time traveling allowed, though.
Heavy Cotton T-Shirt