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Lily Allen, Instagram

Instagram

Lily Allen is feeling under the weather, to say the least!

The 29-year-old "Sheezus" singer, who's been busy flying between NYC and London this week, was hospitalized earlier today after falling ill from what appears to be food poisoning.

Allen hinted she was getting sick earlier this week after returning home to the U.K. post-Met Gala. She shared a photo of cold medicine on Tuesday with the captioned, "This travel catching up with me."

Then this morning, she tweeted, "I can't stop projectile vomiting,also temperature #poisoned," followed by, "hi there, still in hospital, still very sick, having some more tests, thank you for your messages. Lily x."

Lily Allen, Instagram

Instagram

Later, Allen posted a photo of empty water bottles, writing, "#SHEEHYDRATING #poisoned."

Her updates culminated with a sick selfie from her hospital bed that showed her arm hooked up to an IV drip machine. "#SHEEzUS in #SHOSPITAL . I'm fine though guys, just need some fluids cause i can't keep anything down. #dramz," she wrote to her fans.

Lily Allen, Instagram

Instagram

Allen also shared a pic of a hospital gift that a friend brought her, writing, "Awwww , hospital flowers and a lovely picture in a frame from ma pal msaimeephillips."

Feel better, Lily!

Lily Allen, MET Gala

Dimitrios Kambouris/Getty Images