Jennifer Lopez is getting back to her dancing roots in the video preview for her next single "Good Hit."

J-Lo, wearing a sexy Dolce & Gabbana bodysuit and matching leopard stockings, is armed with a blowdryer ... and wow, she's sporting some mighty big hair! The looks kind of reminds us of Cheryl Cole's massive 'do at the X Factor auditions.

We'll admit .. beauty school has never looked this enticing!