"After being defeated in last Assembly elections and subsequently in general elections, I don't want to fight this election. However, I will follow the party's instructions, but I want my party to respect my wish," said Ilmi, a long-time associate of AAP chief Arvind Kejriwal.
Earlier in the day, Ilmi met BJP President Amit Shah and its General Secretary (organisation) Ram Lal and Delhi BJP President Satish Upadhayay, among others.
Hailing a new "political discourse" in the country, she said that it was time to go beyond the politics of identity.
"New blueprint of BJP stands for change and development. I was inspired by Prime Minister Narendra Modi that's why I am joining BJP," she said.
Meanwhile, on the issue of alleged conversions carried out recently by some groups, Ilmi said she does not support "forced" conversions and that BJP has nothing to do with the matter.
Ilmi joins BJP a day after former Team Anna member and ex-IPS officer Kiran Bedi entered the ranks of the saffron outfit with BJP saying that she will contest the February 7 Assembly polls.