Reality TV star Kylie Jenner says "no one knows what goes on" in her day-to-day life and she only shows people what she wants them to see.

The 17-year-old, who celebrated high school graduation at an extravagant bash hosted by her mother Kris Jenner on Thursday, felt obligated to share pictures and video footage from the event on social media.

This was to make it clear that rumours that she quit school last year weren't true, reports femalefirst.co.uk.

Kylie wrote on Twitter: "That's what's wrong with today. If you don't show or 'prove' to social media that you've done something, it's like it never happened!

"My reality is.. I only show people what I want them to see. No one knows what goes on in my (life) day to day but me and who I share my moments with."