Los Angeles born Sarah, with a Southern and British accent and educated at Columbia University (New York), is well-versed with tap-ballroom-jazz-swing-ballet and does yoga.
According to reports, Sarah's character follows Kapoor from USA to India after he deserts her for political aspirations.
Releasing on May 28 next, its cast, besides Sarah and Kapoor, also includes Katrina Kaif, Ajay Devgan, Arjun Rampal, Vivek Oberoi, Nana Patekar.
What ails Katrina Kaif?
Spotted: Ranbir Kapoor in Bangkok
IIT Madras revs up for Saarang 2010
Spotted: Katrina Kaif in Bhopal
IPL to reach US in next 18 months