Selena Gomez was rushed to hospital after an appearance on 'The Tonight Show with Jay Leno'.
The singer and actress was suffering from nausea and a severe headache, her spokesperson told the MailOnline.
She was taken to a hospital in the Los Angeles area from the studio to undergo tests.
Her reprentative said: "Last night after Selena's appearance on The Tonight Show she wasn't feeling well and was taken to the hospital. She is currently undergoing routine tests."
The Mirror reports an NBC insider as saying: “We haven’t heard what was wrong, she just suddenly came over unwell so she was taken to hospital.
“She has been working very hard recently and doing incredibly long days. She may be suffering exhaustion.”