A surprise sweet 16 took place on the subway. It showed humanity at its best.

'Can strangers in a subway car come together and have a party?'

Addie Weyrich wanted to do something spectacular for her friend Jenny Gorelick's sweet 16.

So she decided to throw Gorelick a surprise party — on a New York City subway train.

Photo by Ari Scott for improveverywhere.com.

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