Sia surprised shoppers at Walmart and T.J. Maxx on the Wednesday before Thanksgiving by paying for their items at the cash register, happily swiping her credit, posing for photos and giving out hugs.

However, most of the lucky recipients didn't realize they were talking to the "Chandelier" singer, since Sia, 43, told them her name was Cici and that she was a lottery winner.

Sia usually hides her face behind a wig, making her music far more familiar than her face to fans, which the singer has said allows her to enjoy some anonymity when she's not onstage. For her visits to Walmart and T.J. Maxx in Palm Springs, California, Sia wore her hair in a high bun and dressed in a long, casual coat.

That didn't stop people from taking photos and videos of the generous stranger with the Australian accent, who was ultimately recognized by some diehard fans.