Cupid's Undie Run returns to Chicago this weekend

CHICAGO - Hundreds of people are ready to take it off.

This weekend is the Annual Cupid's Undie Run in Chicago.

This is a nationwide event to raise awareness and funds for Neurofibromatoses, a genetic disorder that causes tumors to grow on nerves throughout the body and affects one in every 3,000 births.

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The run kicks off at noon on Saturday.