Van Vark went as "Sexy Gandalf" and posted it to her Tumblr, writing, "Our last day of school involved dressing up and I took it upon myself to be the sexiest one there."

Tjitske Van Vark is an 18-year-old high school student from Melbourne, Australia. She recently dressed up in costume for her school’s “Muck Up Day” — an Australian tradition where seniors dress up on their last day of school and pull pranks.

And here is the story and pictures of how it went 🙂 BuzzFeedGeeky