Heidi Montag is an Aerobics Instructor

Big-haired Heidi Montag channels her inner-80′s aerobics instructor while filming the music video for her latest single “Overdosin” in Los Angeles on Thursday.

The Hills star was dressed in lots of lycra, legwarmers and a sweatband.

Heidi worked with a director, film crew, choreographer and cast of around 16 to produce a funny 80s-themed workout video, with plenty of big hair and bright colors on show!

The “Overdosin” music video will air TOMORROW, Monday, August 25th @ 1PM EST on HeidiMontag.com.

WHAT DO YOU THINK of Heidi’s new 80′s look — YAY or NAY?

15+ pictures inside of aerobics instructor Heidi Montag…