Maksim Chmerkovskiy isn't sure about partner Debi Mazar's dancing skills yet.

"We're working on them!" the pro told Entertainment Tonight Wednesday while visiting his hairdresser with fiancee Karina Smirnoff (who is paired up with Aaron Carter).

When asked if the team -- who has been practicing for two days -- will win, Chmerkovskiy says, "I'll do my best to make sure of that!" More Dancing With the Stars partners have also been revealed.

Tom DeLay will hit the floor with Cheryl Burke, who won in previous seasons with Drew Lachey and Emmitt Smith. Mya will perform with Dmitry Chaplin. Ashley Hamilton's dad, George, told ET his son will be partners up with Edyta Sliwinska. Donny Osmond's son Don announced on Twitter his dad will dance with Kym Johnson. An official announcement is expected Monday. The show premieres Sept. 21 on ABC.