Bare arms are for late night talk shows

Condoleezza Rice appeared on the Daily Show last week. She chose a sleeveless dress and a very bold silver necklace:

The Daily Show With Jon Stewart	Mon - Thurs 11p / 10c
Condoleezza Rice Pt. 1
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This outfit reminds me of Michele Bachmann's outfit that got us talking about sleevelessness in the first place. But in this case, Dr. Rice is appearing on a late night talk show as part of her book tour. This is an evening event, and she's dressed for evening. She looks great.