After a wild weekend of head-shaving, tattoos, horrendous blonde wigs and near-missed flights - all coming on the heels of a blink-and-you-missed-it rehab "trial" - Britney Spears is again trying to straighten herself out. "[She] has voluntarily checked herself into an undisclosed rehab facility [on Tuesday]," her manager tells People. "We ask that the media respect her privacy as well as those of her family and friends at this time."

Now can someone watch the door this time?

UPDATE: Brit's manager tells E! News' Ryan Seacrest that Spears checked in on Monday of her own volition, is doing great, and simply wants time to rest and focus on her recovery. Extra, meanwhile, is reporting (did no one read the part about respecting her privacy?!) that the rehab center in question is Promises in Malibu, where people go when they "hit a mental, emotional, spiritual kind of bottom," says the site's founder.

UPDATE: A friend of the family tells Us that a plea from Spears' father may have prompted her to seek help: "He told her that he's afraid for her safety, and that she needs to... make some serious changes, or everything is going to get worse." OK!, meanwhile, reports that Brit sheared herself on Friday night out of panic, after K-Fed threatened to have her hair tested for drugs and use the findings in a custody battle over their two rugrats.