Credit: Jackson Lee/CelebrityJuicer/Splash News/Jessica Simpson's Facebook/Hilary Duff's Twitter. Photo: Which Pregnant Celeb Had the Best Halloween Costume?

Coming up with a great Halloween costume is always a hassle, but finding the perfect compliment to a budding baby bump is a whole new level of difficult.

This year, four of Hollywood's current mommies-to-be attempted to rise to the challenge during Halloween. Beyonce used her new, rounder shape to fill out an adorable bumble bee costume, Jennifer Garner opted for a long witch's dress, and Hilary Duff showed off her belly with pride in a striped bandit outfit. Jessica Simpson, meanwhile, took the opportunity to confirm her pregnancy: "It's True! I am going to be a mummy!" she announced on her website with a photo of herself dressed as a...mummy. Two birds, one stone, etc..

Whose maternity costume won your heart?

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