Actor Reese Witherspoon's daughter Ava Phillippe is set to make her official entrance into society at famed Debutante Ball in Paris. The 18-year-old is scheduled to debut at the Bal des Debutantes on November 25, according to the organisation. Ava, who is one of the six American debutantes out of a total of 20, will wear a gown by Giambattista Valli Haute Couture. She will be accompanied by her escort, Maharaja Padmanabh Singh of Jaipur.