GF Feet Always Cold?

Hi Ladies,

I was just wondering if any of you suffer from cold feet? My GF knows I have a thing for her feet, and she wants to wear sandals/open toed shoes more to accommodate which I think is super sweet! Problem is she suffers from cold feet quite often, even in summer. Is there anything I can do to help with this? Could it be a medical condition? Or do women who wear open toed shoes often also have cold feet and just ignore it?