Britney Spears is back in rehab for the third time in just over a week.
Her last two attempts lasted just over 24 hours a piece but now Kevin Federline has reportedly said this is her last chance - he's threatened he'll file for full custody of their sons if she doesn't go through a full course of treatment.
Do you think she can last the 30 to 45 days usually suggested for residents at Promises Treatment Center? Or will she be back out partying again before the weekend?