From reality to runway!

This year, the spawn of some big reality stars hit the catwalk for New York Fashion Week -- with "Real Housewives of Atlanta" star Kim Zolciak and "Duck Dynasty" star Willie Robertson's daughters both showing their stuff.

16-year-old Sadie Robertson (right) made her debut on Monday for the Sherri Hill, a fashion line she also teamed up with to create a collection of prom dresses called Radie Robertson Live Original.

And Kim's 16-year-old daughter Brielle Zolciak (left) was ready to rock it too.

She made her runway debut at the Tumbler and Tipsy for Michael Kuluva show on Thursday, hitting the catwalk in some super high gold heels, lamé tutu and a "Pretty Lil' Bitch" tank top. 

We don't know how she didn't fall over in those shoes! 

Brielle's mom shared some video of her big moment on Instagram, along with the message "I'm sooooooo proud of you."

See more celebs with model offspring in the gallery above -- it's in the genes!

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