Singh, who has made sexist remarks in the past as well, went on to say that Congress president Rahul Gandhi should marry Chaudhary the way his father and former Prime Minister Rajiv Gandhi had "accepted" Sonia Gandhi.
"Rahul ji ki Mata ji bhi Italy mein isi peshe se thi. Jaise aapke pitaji ne Sonia ji ko apna bana liya tha, aap bhi Sapna ko apna banaye. Sabse acchi baat hai saas aur bahu ek hi peshe aur culture se rahengi. (Rahul Gandhi’s mother was in the same profession in Italy. The way your father accepted Sonia ji, you should also accept Sapna Chahudhary. The best thing is both mother-in-law and daughter-in-law will be from the same profession)," Singh said.
The BJP legislator's rant came a day after it was announced that Chaudhary had joined the Congress.
This is not the first time Singh made such remarks. Last week, he commented on the colour of BSP chief Mayawati's hair and the "facials" he claims she gets every day.
"She gets a facial every day. The person who herself gets a facial daily is telling our leader that he is 'shaukeen'," the MLA had said, using a Hind word that suggests vanity.
"Wearing clean clothes is not being 'shaukeen'. Colouring hair at the age of 60 to look young is 'shaukeen'. Her hair has turned grey but she colours it black," Singh said.