Kim Kardashian and Kourtney Kardashian took a time machine back to the '70s to gather their looks for the Balmain show in Paris, and came back to inspire us all to get our disco on.
Both ladies showed off their trim, toned figures — hard to believe they have five kids between them — in coordinated looks for the front row, and the after-party.

Kourt's ensemble was glittery gold and showed off her gorgeous legs, and Kanye West's wife, for her part, wore a fishnet jumpsuit that appeared to be more covered-up, but upon closer look, went to a whole new level of exposure.

The pantless front-row trend seems to have made its way to Paris after we spotted it on OITNB star Dascha Polanco during New York Fashion Week. 

While Kim's nipples were (for once) kept under wraps in her jumpsuit, it's pretty evident that there was no room for underwear. In fact, Kim herself hinted about her decision to go commando on Snapchat as she was getting ready for the show, telling her followers, "today's challenge was underwear or no underwear." Life is hard.

After the show, Kim and Kourtney changed into coordinated after-party looks, and appear to have had a coin toss to determine who got to wear the bra:

Looks like these two are having a great time, and who could be mad at that? Slay on, sisters.