Miley Cyrus is so sick from an allergic reaction to antibiotics that she had to cancel her Kansas City, Mo., show Tuesday (April 15), both she and her publicist revealed.

"I woke up like disssss #SICK," Miley tweeted Monday, followed by "fever fever go away," which she posted the next day. By the end of Tuesday, it was written, "Kansas I promise Im as 💔 [heartbroken emoticon] as you are. I wanted so badly 2 b there 2night. 😿 Not being with yall makes me feel sh--tier than I already do 😷"

Though temporarily heart broken, and a bit disappointed over the accommodations ("Hospital TV is wacccckkkkkkk!!!!!#wherestheappletv," she tweeted), "The Bangerz" singer is making the most of it. "Drs are taking good care of me," she also wrote. 

Her publicist, Meghan Prophet, confirmed, doctors have ordered Miley to be on "medical rest," she said via a statement.

Tickets for the show are being refunded. Miley's next tour date is scheduled for tonight in St. Louis. No word yet on whether she'll be cleared to perform.

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(Photo: Jason Kempin/Getty Images for Myspace)