Showing off her pearly whites, Sienna Miller was in great spirits as she signed autographs and posed for fans after the Broadway preview of her play After Miss Julie at the American Airlines Theatre in Midtown Manhattan last night (September 18).

The production is based on the famous 1888 play about morality, sex and class and co-stars Jonny Lee Miller and Marin Ireland.

Playing the role of flighty aristocrat Miss Julie in the play, Sienna’s performance was praised by theatregoers but at the play’s end there was no standing ovation for her or co-star Jonny Lee, who was also making his Broadway debut.