Gather your squad, women of the Internet -- it's time to plan your group Halloween costume.
Taylor Swift's "Bad Blood" video cemented 2015 as the year of the girl squad -- so we're betting that you and your friends want to assemble a group costume to be reckoned with this Halloween.
Whether you want to go cute, badass, topical or a combo of all three, here are 20 girl squad Halloween costumes so cool, they'll make T-Swift nod in approval from miles away.
Her friendship detector is very, very strong.
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And if the squad wants to be as topical as possible this Halloween, there are also a few group costumes that will likely make their debuts this year...
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