No, not the White House bash.  This pic is from her high school prom.  Ace refers to her as Bird of Prey Weapons Officer Michelle.

She likes that sitting on a throne pose, doesn’t she?

Uhm, the side slit is pretty high.   Classy?  Unholy?

Dressed in a low-cut gown, the then 18-year-old Michelle Robinson was escorted to her prom at Whitney M. Young Magnet High School in Chicago by Mr Upchurch.