Pop star Ke$Ha has completed a two-month stay in rehab after receiving treatment for an eating disorder.

The TiK ToK hitmaker checked into the Timberline Knolls clinic in Illinois in January (14) in a bid to overcome her issues.

She took to Twitter.com on Thursday night (06Mar14) to confirm she has now completed her treatment.

Posting a photo of herself aboard a plane, the singer wrote, "Happy to be back."

Ke$ha, who turned 27 on Saturday (01Mar14), added, "Feeling healthy & working on tons of new music... I can’t thank my fans enough for all the love & support u have given me."

Her rehab departure comes after she decided to scrap her spring tour in a bid to focus on her recovery.