Ashlee Simpson collapses in Tokyo

Ashlee Simpson collapsed after a performance in Tokyo and has been hospitalized.

The 21-year-old singer on Thursday had just performed her single, “Boyfriend,” for MTV Japan when she told the audience she felt sick. She collapsed in an elevator and was rushed by ambulance to a hospital.

Her representative, Rob Shuter, would not give further details or provide her condition.

Simpson, the younger sister of Jessica Simpson, has been touring to support her sophomore album, “I Am Me.” Her appearance at the Radio Music Awards on Monday has been canceled.