Roundabout Theatre Company's 50th Anniversary kick-off party held at the American Airlines Theatre - Arrivals. Featuring: Keira Knightley Where: New York City, New York, United States When: 10 Sep 2015 Credit: Joseph Marzullo/WENN.com
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Credit: Joseph Marzullo/WENN.com

Looking like a natural beauty, Keira Knightly attended the Roundabout Theatre Company’s 50th Anniversary kick-off party held at the American Airlines Theatre this week.

The Oscar and Golden Globe nominee makes her Broadway debut in a new adaption of Thérèse Raquin in this tale of love, lust, betrayal and guilt.

Two-time Tony Award winner Judith Light co-stars.