The shocking reality of practitioners who are responding to demand for curvier, bigger bottoms by performing illegal and dangerous procedures is laid bare in a new National Geographic documentary. 

Trafficked with Mariana van Zeller hears from licensed US clinics and underground, unregulated practitioners who charge up to $3,500 for butt injections and Brazilian Butt Lifts (BBLs), procedures which have seen a surge in popularity in recent years as women seek to artificially create the curvaceous bodies popular on social media. 

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