"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Now that your head is swimming with ideas, check out the DIY mermaid Halloween costumes we've curated ...

Starbucks fans, there are so many ways to express your love for the coffee chain on Halloween. You could turn yourself into a rainbow frappuccino or a Pumpkin Spice Latte, but don't forget about a ...