I don't even want to imagine what's dangling under that chic frock. However ...
Notice also the clenched fists -- particularly her left one. A classic pose covering one of the symptoms of Parkinson's?
Also note the heavy clothing on a warm summer's day. Worn to cover a back brace (revealed from time to time in other photos) that is used to cover the stooped posture caused by Parkinson's, perhaps?
Finally, look at the dainty well-formed lower extremities. Caused by Parkinson's meds, perhaps? Or maybe congestive heart failure? Think she will ever be able to pull Old Crusty on over such fine form?
The World's Smartest Woman isn't exactly a paragon of good health.