Nigaar, who has appeared in shows like "Welcome - Baazi Mehmaan-Nawaazi Ki", "Main Naa Bhoolungi" and "Bigg Boss 8", reportedly tied the knot with Sheikh on Thursday.
"Thank u all for the heartfelt wishes," Nigaar tweeted on Thursday.
According to reports, her groom is a Pakistani businessman settled in Abu Dhabi.
Her star sister Gauahar Khan kept everyone in the loop by sharing photographs of the wedding ceremonies on the micro-blogging site.
Gauahar donned an icy blue lehenga with golden embellishment for mehendi. For the sangeet ceremony, she wore a pink and golden lehenga.
The actress is now back in India.
"Landed in Lucknow. Travelin bck rite after a crazy nite of #meribehenkishaadi,#superhectic..show to launch H.O.M.E a project by #bayaweaver," tweeted Gauahar on Friday.