After a late night out in New York City on Thursday, Kylie Jenner arrived back in Los Angeles on Friday morning, and the 17-year-old reality TV starlet looked completely wiped out!

And not only that, but she tried to cover her face with her fav blankie as she made her way through the LAX terminal ... see, she's still just a kid! But is there any specific reason why she might be hiding her pouty mug behind this patterned throw? Her face looks a little bit different here ... it must just be because she skipped out on the makeup, right?

In other news, Kylie and Kendall have been busy promoting their PacSun and Madden Girl clothing collections, and just the other day we caught Kylie at a photo shoot with her supermodel sister. Kylie wowed in the recent issue of V Magazine, but it seems like she's been under a lot of pressure lately -- she looked like she was about to have a meltdown when we snapped her leaving the studio...