Ke$ha is taking her stint in rehab very seriously, and has postponed tour dates in order to continue her treatment for an eating disorder.

-Hammond, Indiana, March 15
-Green Bay, Wisconsin, April 13

Originally, Ke$ha was planning on a 30-day treatment program-- But it may take much longer. The 'Timber' singer said in a statement:

"I was so looking forward to performing at these dates but I need to follow my doctor's advice and get my health back on track. All of your support during this time has been so amazing. I couldn't have done this without you all. I look forward to coming back stronger than ever on the next tour."

Last month, Ke$ha tweeted from rehab:

It's unclear when Ke$ha will finish up with treatment, but we hope she's back in action soon! Best wishes for Ke$ha and her animals!