Celebrities have been busy hitting up Halloween parties with their cool costumes this weekend. Good Halloween costume ideas are vital if you want to win a prize for your if you're looking forward to win the best costume award! If you haven't picked out your own Halloween costume just yet, maybe one of these celebrities' Halloween costume will give you some inspirations.

Lucy Hale as Twitter Bird

Paris Hilton as Sexy Bunny

Paris Hilton as Minnie Mouse

Colton Haynes as Princess Fiona Shrek

Melanie Iglesias as X-Men's Storm