Ouch! Rogue Shoe Buckle Sends Kelly Osbourne to Hospital After Dancing

Princess of Darkness should be fine, but was forced to dance the group hustle barefoot

You wouldn't know it to look at her, but Kelly Osbourne ended her paso doble in pain.

The unexplained injury that resulted in her gingerly dancing the group hustle in bare feet also led to a visit to the hospital immediately following tonight's taping of Dancing With the Stars.

A source tells E! News that the buckle of Kelly's shoe slammed into her foot at the end of the routine. The extent of the injury is currently unknown, but it caused her enough pain that she eschewed shoes moments afterward for the group number.