Kourtney Kylie
Credit: Axelle/Bauer-Griffin/FilmMagic

Now this is one way to catch some rays. Today, Kourtney Kardashian and Kylie Jenner took to Instagram to share photos of them "sunbathing" together outside, but their ensembles aren't what you'd expect.

Instead of wearing shorts or swimsuits, the oldest and youngest siblings of the Kardashian-Jenner clan rock outfits that look more ready for the red carpet than to hang out by the pool. Both of the famous sisters wore monochrome numbers for the occasion, with Kourtney opting for a purple velvet bralette and coordinating wide-leg lavender trousers both by Sergio Hudson while Kylie chose a white turtleneck top, matching cropped skinny pants, and classic nude pumps.

Kardashian first 'grammed a photo of them in the outfits, which shows them smiling up at the sky. She captioned the picture: "Sunbathing with bae."

Minutes later, Jenner posted a very similar photo of the pair with their eyes closed and wrote "oldest vs youngest" alongside it.

One thing's certain: This family never misses an opportunity to get glam.