EXTRA” has learned exclusively that after months of hard partying, pop princess Britney Spears has entered rehab.

Our sources tell us that Brit, who has been notably absent from the paparazzi scene in recent days, is seeking professional help at an undisclosed location.

This comes after the emotional letter that rocked Britney’’s world, composed after her non-stop partying took her from coast to coast and back again.

Those close to Brit were fed up, frustrated and pleading with her to seek professional help; it appears they finally staged a long-anticipated intervention.

Update: Since this report earlier today it has been confirmed that Brit did indeed check into Eric Clapton’s Crossroads Rehabilitation Centre in Antigua. That’s right, Antigua. If you’re going to go to rehab, that would be the place to do it. After family encouragement, Britney checked in but checked out and flew to Miami a day later. I’ll bet she didn’t want to miss a weekend at the clubs.