Britney Spears’ mother “blames herself” for her daughter’s erratic behaviour.

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Lynne Spears has broken her silence and accepted responsibility for Britney’s downward spiral this year, admitting her dreams of having a successful daughter have tragically backfired.

She said: “For everything that’s gone wrong for Britney, I blame myself.

“I didn’t raise my children to have Hollywood careers. This all just exploded in my face, and big dreams became big headaches.”

Britney is currently fighting for joint custody of sons Sean Preston, two and 14-month-old Jayden James with ex-husband Kevin Federline.

She has been ordered to take regular drug tests and attend parenting lessons, after losing full temporary custody of her children to Kevin last month.

In the past year, Britney has seen her second marriage fall apart, shave her head, attack a paparazzo’s car with an umbrella, been described as a “habitual drug user” by a judge, accused of being a lesbian and lambasted for her shambolic comeback performance at the MTV Video Music Awards.

Lynne also revealed she is slowly repairing her broken relationship with Britney.

She told Life and Style Weekly magazine: “We have reunited. We are friends.”

Lynne, who is currently working on a revealing book about parenthood, says the tome will have a spiritual side.

She explained: “I am working on a parenting book that is going to have faith elements to it.”