Are Kendall & Kylie Jenner Too Young to Be Out on the Scene Sans Sisters?

The youngest Kardashian stepsisters attend a Hollywood premiere together on a school night

Last night, Kendall and Kylie Jenner had the spotlight all to themselves!

While Kim's in London and Kourtney's enjoying NYC with Scott Disick, the two youngest members of the Kardashian clan hit the Hollywood premiere of Easy A sans their famous sisters and parents.

So did the teenage aspiring models stay out late on a school night?

Doesn't sound that way.

Kendall and Kylie weren't spotted at the afterparty held at h.wood, where Taylor Swift was toasting her friend Emma Stone, who stars in the movie.

"Easy A was really really funny and good!! Haha I was laughing the whole time!!" Kendall posted on her Twitter.

And speaking of good behavior, Taylor was sipping water, not cocktails, at the bash.