Britney in Rehab!

After shaving off all her hair and displaying bizarre behaviour at LA's Mondrian hotel, over the weekend, Britney Spears has checked herself into rehab (February 19).

The singer's manager Larry Rudolph said, "Britney Spears has voluntarily checked herself into an undisclosed rehab facility today. We ask that the media respect her privacy as well as those of her family and friends at this time."

Despite attempting to keep the location a secret, the faded popstar has been papped strolling (and smoking - see pic) through the grounds of California treatment centre, Promises.

A typical stay at the clinic is around 45 days and costs between 20,000-40,000. Patients often share a room and undertake a series of group and solo therapy sessions.

The news comes on the back of Britney checking herself in, then out, of a different rehab centre on Friday night (February 16) not long after she gave herself that infamous buzz cut - which in itself has sparked a flurry of rumours.

The latest story claims Brit shaved her hair after her ex, Kevin Federline, threatened to get her locks tested for drug use in a bid to gain custody of their sons. The almost bizarre-as-her-barnet tale, however, has been refuted by both K-Fed and Brit's reps.

Another, claims Brit sheared her tresses coz she was suffering from terrible head lice.

Well, Brit, you know what they say - hair today, gone tomorrow.

Click here to read all about Britney shaving her hair off and getting a tattoo over the weekend...

SLJ