Keri Hilson collapses during flight

Singer Keri Hilson has sparked fears for her health after vomiting and fainting on a flight on Friday.

The Knock You Down hitmaker has been in China this week, but Hilson's hectic schedule has taken its toll on the star.

The 29 year old took to her Twitter.com page on Friday to reveal she was taken ill on an airplane as she left the country, and she blames her lack of sleep for the health scare.

In a post, she writes, "Sure hope my day gets better cuz (because) this morning I'm having so far... I fainted on my flight. then I threw up. I'm fine now, I just need real rest... haven't had more than 3.5hrs of sleep in 48hrs."

Hilson, who is heading back to her native U.S., admits she began to feel better after coming round but was so distracted by her sickness she left several personal belongings on the flight.

She adds, "I left my purse & gifts from China on the plane, discombobulated. *sigh* drinking gatorade & HOME-bound. I'm good now..."