Ke$ha Leaves Rehab

After completing a two-month treatment program for an eating disorder,  Ke$ha has left the facility and says she's feeling "blessed" to be on the mend.  

Ke$ha originally was supposed to spend 30 days in rehab, but she stayed twice as long ... on her own accord.

The 27-year-old shared a picture of herself on Twitter, looking out the window of her plane. She's sporting a new look -- a rainbow-colored 'do! Ke$ha arrived at LAX and certainly looked happy.  She says she's working on music again and feels great.

"Happy to be back! Feeling healthy & working on tons of new music. I can't thank my fans enough for all the love & support u have given me," the songstress tweeted. "Life is beautiful. I'm so blessed to have u all,"

FYI, Ke$ha sought treatment in January, the pop star said in a statement, "I'm a crusader for being yourself and loving yourself but I've found it hard to practice." 

She extended her 30-day stay in February and postponed her spring tour to focus on getting "my health back on track.

"All of your support 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," she added.

The concert dates, which were scheduled for March and April, have not yet been rescheduled.