20 Sexy (and Affordable) Halloween Costume Ideas You'll Love

Definitely one of the cooler DC villains, Poison Ivy makes for a great DIY sexy Halloween costume. And if you're spending Halloween outdoors, her green look makes it easy to blend in with your surroundings. Just don't get lost in any corn field mazes or pumpkin patches. To recreate this look, cover a bikini or short dress in fake ivy leaves.

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