Of course, cleavage may be pretty big in the Kardashian family, but so is business.

And if you didn’t believe her, she posted the following video evidence to Snapchat. Yep, that looks like duct tape to us. (Though, good Lord, we hope it’s something a little less painful to remove.)

This is the second time this year Jenner has appeared at a Sugar Factory opening; and the Kardashian-Jenner sisters have been longtime supporters.

What you couldn’t see was all the tape underneath.

That’s right: “There’s a lot of duct tape under this dress holding these suckers up,” Jenner, 17, wrote in a Friday night Instagram post after the event, where she was occasionally flanked by girls with cupcakes in their hair.

06/22/2015 at 06:30 PM ET

Gustavo Caballero/Getty Images/span>

Kylie Jenner stepped out in very revealing style Friday night for the Miami opening of the Sugar Factory, wearing a partially sheer little black dress.

She also tagged makeup artist Ariel Tejada and stylist Monica Rose in the photo, whose glamorousness Tejada described as “Literally Beyond!!” in an Instagram post of his own.

–Adam Carlson