Mark Ballas SCHOOLS Kim Kardashian Pre-Wedding

"Dancing with the Stars" pro Mark Ballas is getting Kim Kardashian to step it up BIG TIME before her wedding -- claiming he personally taught her and Kris Humphries some new moves for their big day.

Hopefully the marriage lasts longer than Kim's stint on "Dancing with the Stars."

Hey look! What's Pia Toscano doing there?