Nicky Parsons (The Bourne Identity)

Nicolette "Nicky" Parsons, born March 28th, 1979 in New York City, New York, USA, was the primary heroine of the Bourne film series, introduced in The Bourne Identity. Portrayed by Julia Stiles, she was a character originally created for the films, and the only character besides Jason Bourne to appear in all four movies. Hinted to have had romantic feelings for Bourne, she abandons Treadstone and the CIA to work with him.

Where is Nicky when she becomes naked and how does it happen?