Obama sang a bit of the same song at a campaign fundraiser in Harlem last year . They dance to Jennifer Hudson 's performance of Al Green 's ` ` Let 's Stay Together '' First lady wears Jason Wu gown to both balls ; Wu also wore her 2009 gown . 21 acts were to perform at the two official inaugural balls Monday night .
They dance to Jennifer Hudson 's performance of Al Green 's ` ` Let 's Stay Together '' First lady wears Jason Wu gown to both balls ; Wu also wore her 2009 gown . 21 acts were to perform at the two official inaugural balls Monday night .