Celebrities are no strangers to playing dress up. From award shows to red carpet premieres, the A-Listers are used to transforming themselves for a special occasion. 

But when it comes to Halloween, Hollywood stars tend to take their looks to another level. As the spooky holiday approaches, we are taking a look back at some of the wildest celebrity Halloween costumes of all time. To Emily Ratajkowski's spot-on Marge Simpson to Nick Jonas' hilarious Hamburgler ensemble, launch the slide show above and if you're still looking costume inspiration get inspired by your favorite celebrities.