Those celebrities sure get creative! Check out Hollywood's ultimate Halloween costumes over the years, including memorable ensembles worn by stars like Heidi Klum, Kim Kardashian, Matt Lauer, and more
Why did the singer dress as a willow tree at the 2010 Hulaween Benefit gala in NYC? "[Martha] said, 'I think you should be a willow, because willows are very flexible, and these days you have to be flexible,'" Midler told Us of her costume made by Martha Stewart and Co. "That's really the truth!"
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