Jingle all the way!

Boob-twerking Sara X, who busted onto the Internet in October with her eye-popping Mozart performance, and later returned to raise awareness (and money) for breast cancer, is back.

In her latest video, the pectoral prima donna appears in a Santa Claus hat and jingles her bells to the classic holiday tune. Here are some outtakes from the shoot.

Sara released the video on her YouTube channel Monday, where it's already run up more than 1 million views.

The gloriously tattooed former dancer does her trick by flexing her pectoral muscles, which causes her breast implants to bounce.

She was compelled to explain how she does it in October after people accused her of faking the routine.

"While my boobs are very fake, the video is very real... I am flexing my pectoral muscles and it's moving my implants," Sara said in a Facebook post.