Irina Slutskaya of Russia is officially credited with inventing the change foot Biellmann spin . She performs the Biellmann on one foot , then drops her free leg and performs the spin on her other leg .
Irina Slutskaya has been credited as the first person to have ever performed a Biellmann spin with a foot change ( i.e. , doing a Biellmann , then stepping onto the other leg while in the same spin and performing it on the other leg ) .