U.S. socialite Paris Hilton badly hurt her chin after falling over outside a music store in Prague, media reported yesterday.

The hotel heiress, who was rushing out of a music store in the Czech Republic capital Sunday, was in a bid to escape the paparazzi.

She tripped as she went through the door with her boyfriend, Good Charlotte rocker Benji Madden.

Benji, who had no idea of what was going on, almost stepped over the socialite.

When he realized what had happened, Benji helped Paris up and asked the paparazzi to leave so he could take care of her.

As they left the store, Paris was overhead moaning to Benji: "Prague, never again!"

The following day, the 27-year-old "Simple Life" star was seen a large bruise on her chin as she left the Good Charlotte concert at the city's Congress Center.