In his eyeline as he served towards the Royal Box end was an immaculate individual in dark sports jacket and a black tie.

Fourth of July weekend was full of fun and whimsy, but for these six celebs, it was also full of questionable outfit choices that missed the mark.

FEMAIL has the definitive ranking of the night's best and worst dressed at the Bal d'Été at the Musée des Arts Décoratif.