MUST HALLOWEEN COSTUMES BE PARTNERED UP?

If you're dressing up for a Halloween party, then you know that you usually don't go alone.  You're invited to bring along a friend or partner - what's called a plus 1 in Britain - and then what's popular is to wear costumes that go together - famous couples, a toothbrush and a tube of toothpaste, male and female frogs.

But it's OK to go single and to wear something that doesn't require partnership.

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That said.  There's me and my dog...