Weird optical illusion will make you do a double take

Another day, another insane optical illusion.

On Monday, 18-year-old Eleanor Bailey shared a photo of her sister in a club in the U.K.

It doesn't take long to spot what's off about the photo.

So... what's going on here?

Bailey's sisters right arm looks extremely long, but in reality, it's out of sight behind the guy in the Whitney T-shirt.

That man's black shirt fades into the black top of the girl on his right, so that girl's arm looks extremely long.

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