Smirnoff had announced her exit from Dancing with the Stars after 16 seasons following last fall's 19th season and did not participate in Season 20 this past spring.
"I was a little nervous about not dancing on the show at all last season," she told Entertainment Weekly. "I had other things to do in my life, but not going back to the show felt like trying to see if I can walk on my own two feet! I've had obvious moments when I missed it."
All of the remaining announced professionals did compete on this past spring's 20th edition of Dancing with the Stars.