50 Hottest Kendall and Kylie Jenner Instagram Moments in 2015

Kendall and Kylie Jenner are easily the most recognizable teenagers on the planet. As the youngest sisters of the Kardashians, they've emerged as the sexy, younger versions of their hugely famous older siblings, Kourtney, Khloe and Kim.

While they've grown up in the public eye, the Jenner girls are proving to be business savvy on their own; they've learned a thing or two in the family branding business. Kendall is a certified supermodel, having graced the pages of Elle and Vogue and walked in nearly every Fashion Week around the world. Kylie is a budding beauty and hair mogul with her own line of hair extensions and lipsticks.

Together, they have written a book and curated fashion collections for brands like PacSun and Topshop. Other than that, the lives of the Jenners essentially consist of chilling with rappers, going to the hottest events around the globe and having cameras follow their every move for E!'s Keeping Up with the Kardashians. Not to mention, at 20 and 18 years old, respectively, these two are grown up and look the part (We can see why Tyga is obsessed with Kylie).

In honor of the year coming to an end, XXL pulled together 50 of the girls' hottest Instagram snaps from 2015 to prove just how good life is in their world.