Cynthia Nixon saw costar Kristin Davis's first name and thought Kristin Scott Thomas was playing Charlotte in the 'Sex and the City' pilot.

Cynthia Nixon revealed to "Sex and the City" co-star Kristin Davis on Monday that when she joined the HBO comedy as Miranda, she thought another famous "Kristin" had been cast as Charlotte: "I didn't know who you were,

Cynthia Nixon didn't recognise Kristin Davis before they worked together on 'Sex and The City'. The 58-year-old actress starred alongside Kristin, 60, on the hit HBO series - but Cynthia initially thought that she would be working with Kristin Scott Thomas instead.

Cynthia Nixon knew Sarah Jessica Parker and Kim Cattrall before signing on to 'Sex and the City,' but was convinced Kristin Davis' part had actually gone to Kristin Scott Thomas prior to filming the pilot.