Kris Jenner
is one hot grand-mama!

The "Keeping Up with the Kardashians" matriarch may be revealing her secret to staying slim -- pole dancing. 

Kim Kardashian took to Instagram on Wednesday to share a photo of her mother in a very compromising position.

In the pic, the 58-year-old is hanging upside down on a pole with her legs wrapped around it during a workout at Sheila Kelley's S Factor studio in Los Angeles.

"#WCW @krisjenner," she wrote along with the candid snapshot. (By the way, "WCW" means Women Crush Wednesday!)

According to Sheila Kelley's website, the S Factor workout combines yoga, ballet, pilates, striptease and pole dancing.

These classes seem to be paying off for Kris!

What do you think of the risqué photo? Tell toofab in the comment section below, and click "Launch Gallery" above to see more Kardashian TwitPics.

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