The Dynasty's rule came to end with the declaration of the Republic of Egypt on 18 June 1953, 11 months after the Egyptian Revolution of 1952.
The wives of the Egyptian pretenders are titular queens.
Before Tewfik Pasha Egyptian rulers had harem (which means have more than one wife and several concubines).
Women had two statuses in the harem of the Muhammad Ali dynasty.
There can virtually be an unlimited number of women who can enter the harem with this title.