Kylie Jenner showed off her innocent side last night on Instagram, as she shared a rare (almost) make-up free selfie.

The reality TV star can be seen giggling to an off-camera Tyga, as she pouts for her legion of followers.

Kylie captioned the post: "running on no sleep man. I'm so excited for tomorrow!"

We have to admit it's all very cute, and a nice change to see Kylie looking au natural for once!

She's currently riding on the success of her newly launched app, which is already topping all of the charts and even beating sister Kim Kardashian's...