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Australian pop singer Sia usually hides her face behind her trademark wigs, which is why when she decided to surprise some lucky Walmart shopper in California the day before Thanksgiving, she almost got away with having her good deeds go unrecognized.

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She walked over to the registers and made an announcement to everyone in line.

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The 'Chandelier' singer claimed her name was "Cici" and that she had just won the lottery.

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She then proceeded to pay for everyone's items.

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"Cici" almost got away with it, but more eagle-eyed fans were eventually able to surmise her true identity.

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Here's to you, Sia!