After a couple of special appearances role, Gauhar made her full-fledged Bollywood debut with the Yash Raj Films Rocket Singh: Salesman of the Year.in 2009. Khan next appeared as rebellious and outspoken Samara Shroff in the action thriller Game. Khan was next seen in the 2012 romantic drama Ishaqzaade, in which she also did twoiconic item numbers "Chokra Jawaan" and "Jhalla Walla". She palyed a lead actress role in 2016 release Fever opposite Rajeev Khandelwal.
Apart from movies she has been an active celeb on small screen. She has participated as a contestant in reality shows like Jhalak Dikhlaaja 3, where she stood runners up. She was winner of Bg Boss 7 in 2013. The very next year she was seen as a contestant in Khatron Ke Khiladi. She has also been a host of the reality TV show India’s Raw Star.
Khan engaged with director Sajid Khan in the year 2003, but the couple called off their engagement soon. Khan was then in a relationship with TV actor, Kushal Tandon, but that relationship too was short lived.