Young Hollywood's most elite stepped out on the red carpet at Variety's 5th annual Power Of Youth event on Saturday, October 22nd and our Katie Krause was front and center of all the action. 

Aside from chatting with the celebs about their inspiring philanthropic work, we had to ask everyone what their plans were to celebrate Halloween this year!

Stars including Greyson Chance, Chloe Moretz, Hailee Steinfeld, Hayden Panettiere, Cassie Scerbo, Raini Rodriguez and Rebecca Black revealed their fun plans and funky costume ideas!  Peep HW's exclusive vid!

Related Video: Taylor Momsen Talks Grinch Costumes & Mean Paparazzi!

The award for most creative costume idea has to go to miss Chloe Moretz though.  "Me and my two best friends are going to be the Powder Puff Girls," the Hugo starlet revealed to us.  "I'm going to be Bubbles, so, I think I'm a bit smarter than Bubbles is but it's okay!"  So cute, right!?

What will you be dressing up as for Halloween?!  Which star's costume did YOU like the best?!