Arthur Ashe Kid's Day with Dora

So Dora went to kid's day.  Here she is with the singer Gunther on Shake It Up (real life Kenton Duty).  They met in the elevator before he sang.
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Then here is Julie (Dora's Mom), in the box.  Who is that behind her in the other box.  She looks a little familiar.
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Oh yeah Michelle Obama, the daughters and Billie Jean King.