Justin went in-depth on the festivities, where proceeds will be going towards the Pencils of Promise organization.
"I'm very excited," Justin said. "I'm excited because it's going to a great cause."
Good deeds aside, the pop star also divulged his fashion sense, his love for shoes and what celebrity he feels has the best style (hint: he's done a song with him before).
Click the video to see who it was and to hear Justin talk about his upcoming projects and more!