St. Louis ? It’s an international mystery: How did a Missouri family’s Christmas card photo end up in the Czech Republic, splashed across a huge storefront advertisement?

Danielle Smith said Wednesday that the photo taken of her family last year got sent to family and friends, and was posted on her blog and a few social networking sites. The photo showed her and her husband Jeff holding their two young children.

About 10 days ago, one of Smith’s college friends was driving through Prague when he spotted their huge smiling faces in the window of a store specializing in European food. He snapped a few pictures and sent them to a flabbergasted Smith.

Mario Bertuccio, who owns the Grazie store in Prague, said the photo was from the Internet. Details were sparse, but he said he thought it was computer-generated. When told it was a real photo — of a real family — he said he started taking steps to remove it.