"It's okay, honey," she said as she and fellow judge Nigel Lythgoe consoled the embarrassed girl.
"I've never had anyone just vomit on me like that," Abdul said as the crowd laughed.
Chi recovered quickly, too. She ran out of the theater, screaming in joy.
"I hugged Nigel and then I hugged Paula and she squeezed me too tight," Chi explained to host Cat Deeley. "And all the happiness came out on her jacket."