Her thighs must me touching, otherwise why would anyone stand like that, unless... she's giving birth on the sidewalk.
The Obamas are vulgarity personified. The White House is defiled daily, so how long before it vomits out these toxic contaminants? Sadly, the WH tolerated the Clintons, so it may be hopelessly compromised.
I don't think so. Someone with experience in orthopedics described (on a thread) several types of skeletal or joint malformation that could account for the bizarre stance. On the other hand, it could be another coping mechanism, like her slouch, attempting to disguise her height.