Is this legal?!

There was some hoo-ha about people wearing yoga pants on flights recently and now Kendall Jenner has the guts to show up in head-to-toe Spandex -- in some kinda elongated biker short paired with a tight turtleneck with shoulder pads, ankle boots and nothing else!

If anyone can pull it off, the young supermodel can, but seriously, I can see every crease, crevasse, dimple, line, curve, etc. What happened to jeans and a sweatshirt?!

More importantly, Kendall's take-off from LAX Friday served as proof to fans who were speculating Kylie Jenner was in labor that, in fact, she was not. Why would her sis jet to Italy if the Lip Kit maven were giving birth to her first child?!