Here we go again.

First it was Kendall Jenner who had us asking "Is this appropriate?" when she started modeling bikinis online and wearing outfits like these in public ... and now her younger sister Kylie Jenner is following suit.

At 15, Kylie is the youngest of the Kardashian/Jenner clan -- and last night, she wore this to the premiere of her rumored-boyfriend Jaden Smith's new movie, "After Earth."

Baring her belly and showing off her legs in a mullet dress, Kylie looked more like one of her much older sisters than a young high school student. Factor in those Kim Kardashian-like tresses and heavy makeup, and we gotta ask:

Maybe it's a sign of the times? Vote above and give us your take in the comments section below.

See more of Kylie's style evolution in the gallery above. Is she taking after her famous sisters?

And check out more "After Earth" premiere pics below:


Hot Videos