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Joy-Anna Duggar might not be old enough to vote, but you can’t say this teen isn’t pulling her weight.

The 17-year-old 19 Kids And Counting star pulled off an impressive fitness feat over the weekend, squatting 145 pounds — in a skirt! — as her astounded older sister Jessa looked on.

Jessa took to Instagram to document the impressive weightlifting feat, writing, “Joy was tearin’ it up in the workout room today!

Watch the video on RadarOnline.com

“She beat her previous record by parallel squatting 145 lbs!! Keep it up, little sis!”

Don’t expect the conservative Christian teen to join the Instagram-fueled craze of gym selfies, as she was well-covered up for the grunting session, wearing tights under her skirt and a hoodie.