Williams and professional partner Nikita Kuzmin performed a show-stopping dance to Christina’s Ain’t No Other Man.
Williams, who sported new blonde hair, began the dance wrapped around a pole and the up-tempo number took Blackpool by storm.
Craig Revel Horwood told Williams: “You are one of the most incredible dancers that I have seen on this show in the 20 years I have been doing it. You really are.”
The couple scored a total of 39 out of 40.