A biographer and journalist, spent 18 months studying the Britney Spears as an undercover paparazzo last year.

And now, he’s written down all his findings in a new book, which he hopes will hit the shelves by Christmas for the world to see.

In it, he claims that Brit admitted she fears she will not live to see her 28th birthday, which happens December 2nd.

Britney already suffers from drug abuse, bipolar problems and suicidal tendencies, and Halperin claims she revealed to him personally that she fears she will die at 27.