The Dog Control Coalition (DCC) - a group of animal organisations opposed to the ban - says more than 200 dogs are still waiting for a new home at rescue shelters. They face being put down within days.
Pets4Homes says it will not allow owners of the breed, which has been linked to swathes of attacks, to sell their dogs for less than the £200 the paid out to those who put their pets to sleep.
The Love Island star, 28, admitted she had been crying most of the morning over fears many dogs will be put down because of the Government legislation.
People have just weeks left to get an exemption from an XL bully band in England and Wales. A leading vet has urged more people to come forward and apply for one.