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Brace yourselves,Mother Daughter Exchange (2021) Full Movie Online Stranger Thingsfans, because this will break your heart in a thousand pieces and not even Eleven will be able to mend it.

SEE ALSO: The 'Stranger Things' cast has some strong feelings about the Season 2 ending

An eagle-eyed Redditor noticed a teeny, tiny detail in the Season 2 finale, when our favourite kids are dancing to the mellifluous note of "Every breath you take" during the Hawkins High School's Snow Ball.

Eleven a.k.a. Millie Bobby Brown is wearing a blue hairband on her wrist as she dances off with Mike:

Original image has been replaced. Credit: Mashable

Now where have we already seen this blue band?

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As keulenshwinger pointed out, it's the same hairband that appears in what are arguably the saddest, most heartbreaking scenes in the whole series: the flashbacks with Chief Hopper and his dying daughter Sara.

In the Season 1 finale flashback, Sara is seen wearing the hairband:

Original image has been replaced. Credit: Mashable

And later, in the hospital, Hopper is wearing the same hairband on his wrist:

Original image has been replaced. Credit: Mashable

And he kept wearing it, until he donated it to Eleven, who he adopted at the end of Season 2.

We're not crying, you're crying.

Original image has been replaced. Credit: Mashable

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