In 2011, the reality TV show The Khan Sisters focused on the lives of Khan and her sister Gauhar. The following year Khan appeared in the show Sacch Ka Saamna. She also hosted the show Love Story, showcased some love stories of Bollywood. Khan presented the stories and interviewed various celebrities.
In November 2014, Nigaar participated in Bigg Boss 8 as wild card entrant. She survived only for a week where she got evicted in week 9 as she failed to do well like her sister Gauhar Khan did in Bigg Boss 7.
Nigaar Khan finally married with her long-time boyfriend and Pakistani business man Khayyam Sheikh in Dubai on 23 july 2015, who is an American citizen. Nigaar has moved to Dubai post marriage.