Click to stream

Britney Spears’ fall can be traced back to her introduction to ex-husband Kevin Federline, Dr. Drew PinskyE! True Hollywood Story of her life, premiering Friday, July 25 at 8 ET/PT. explains in the new

“If you take Britney’s life and put a moment in time where things started getting bad, it’s the moment she got involved with Kevin Federline,” Pinsky opines.

“That’s when things started to unravel,” he adds.

Watch Usmagazine.com’s preview of the documentary above, courtesy of E! Entertainment Television.

Spears, now 26, seems to have bounced back from her low, when she was hospitalized in January following a dramatic custody dispute.

On Saturday, the singer made a surprise appearance at a fundraiser for Jenny McCarthy’s autism charity Generation Rescue in Los Angeles.

Spears “definitely looked happy,” a witness tells Us. “She was clapping and smiling a lot.”

It was Spears’ first public outing since reaching a custody agreement with Federline, 30, last week.

While Federline gets sole custody, Spears gets three visits a week from Sean Preston, 2 1/2, and Jayden James, 1 1/2, including two overnights.

If all goes well, she could have her boys roughly 40 percent of the time, her attorney, Laura Wasser, has said.

Wasser told the Associated Press the “difference” in Spears “from the beginning of this year to now is astonishing.”

Spears is spending her summer recording a new album.

Britney’s new E! True Hollywood Story premieres Friday, July 25th.

Source: Us