An Australian jeweler feared she was about to be robbed by a shady American, that shady American was none other than Leonardo DiCaprio.

According to TMZ, the clerk named Linda, works at The Family Jewels shop in Sydney.  She panicked when she saw two big men walk into her store and stand guard at the door.  Suddenly, a man came into the store covered in a hoodie, cap and dark sunglasses.  Linda thought she was about to get robbed, so she sent a customer next door to get the owner of The Family Jewels.

By the time the owner arrived, Linda realized it was not a robber, but the "Titanic" star.

Read why Leo was shopping here from TMZ.

Remember when he was on Growing Pains?