The Keeping Up With The Kardashians stars decked themselves out in monochrome while making an appearance at the star-studded 2014 Billboard Music Awards.
Older sister Kendall, 18, looked pretty incredible in a skin-tight white halterneck top which featured large cut-outs on either side of her chest.
Kendall - who walked for a host of top-notch designers at New York Fashion Week - teetered along in silver pointed courts while toting a metallic clutch bag.
But the star of her outfit had to be her sparkly black trousers which glistened in the light as she struck a pose for the cameras.
Not to be outdone, Kylie, 16, made an entrance in a little white dress featuring delicate spaghetti straps and a knee-length hemline.
Kylie took the opportunity to flaunt her newly-dyed turquoise hair, completing her ensemble with lace-up white heels and a statement choker necklace.
Later that evening, Kendall took to the stage to introduce a performance by Aussie group 5 Seconds of Summer, but unfortunately managed to get her words a little mixed up. At one point, it seemed she was about to introduce One Direction instead... oops!
Kendall appeared to blame her eyesight for the mishap, later tweeting: "Anndddd as if I wasn't nervous already!!!! #NeverLeavinMyContactsAtHomeAgain! #LOL #LessonLearned."
What do you think of Kendall and Kylie's outfits? Let us know by commenting below as the best comment across the site each week wins £50!
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!
Got an iPad or iPhone? Reveal Mag is specially designed to fit!