Singh began her career as a model before making the transition to the silver screen. After completing her college education she began modeling with brands like ICICI bank and Alukkas Jewellery among others.

She took a break from acting from 2005 to 2008. In 2008, she made her comeback with the leading role opposite Sanjay Suri in the director Onir's romantic-comedy, Sorry Bhai! Its release over the weekend of the Mumbai terror attacks proved disastrous at the box office.

She then starred in Rohit Dhawan's Desi Boyz, where she played the role of an economics teacher opposite Akshay Kumar. Desi Boyz also starred John Abraham and Deepika Padukone.

In Sudhir Mishra's movie Yeh Saali Zindagi (2011), Singh played the role of an aspiring singer from Delhi who goes to Mumbai to get fame and money.

In 2012, she performed an item number in Shirish Kunder's Joker.

Her next movie was I, Me Aur Main with John Abraham in 2013.[16] She got together again with her mentor Sudhir Mishra for a short movie Kirchiyaan and for the film Inkaar in 2013. In 2014, she then appeared in a special song with Suriya in Tamil film Anjaan.

In 2015, she again performed a special song with Akshay Kumar for the second time in his film, Gabbar is Back.