In 2008, Khan participated in the dancing competition show Ek Khiladi Ek Haseena. Their dance in one of the episodes on the song “Woh Ladki Hai Kaha” (Dil Chahta Hai) was well appreciated by the judges, Sushmita Sen and Wasim Akram, and the audience.
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 2013, Khan appeared on the reality show Welcome – Baazi Mehmaan-Nawaazi Ki. Since September 2013, Khan has appeared in the mythological show Buddha based on life of Gautama Buddha. She plays the role of Buddha’s aunt and Devadatta‘s mother.Now she is replaced.
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.