Ke$ha has finished her stint in rehab.

The 'Timber' hitmaker has left the Timberline Knolls clinic near Chicago after undergoing treatment for an eating disorder, and she claims she's ''healthy'' and ready to start work on her music.

She took to Twitter last night (06.03.14), writing: ''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. (sic)''

She later added: ''Life is beautiful. I'm so blessed to have u all. (sic)''.

The 27-year-old singer recently postponed her upcoming 'Warrior' world tour, which would see her perform in Hammond, Indiana, on March 15 and Green Bay, Wisconsin, on April 13, in a bid to overcome her issues before focusing on her career again.

She said last month: ''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 ... I couldn't have done this without you all. I look forward to coming back stronger than ever on the next tour.''

Ke$ha checked into rehab on January 3 after admitting she was suffering with anorexia and bulimia.

Her mother Pebe Sebert said at the time: I've watched my beautiful, self-confident, brilliant daughter be berated and ridiculed for her looks and weight to the point that she almost died.

''The doctors told me her blood pressure and sodium levels were so low, they'd never seen it that low except with someone who'd had a heart attack or stroke. They said it was a miracle she hadn't already dropped dead on stage.''