Britney Spears is reportedly still hopeful of gaining joint custody of her two sons with her ex-husband Kevin Federline.

The couple recently settled a bitter 18-month court battle over Sean Preston, two, and Jayden James, 17 months, with a judge awarding sole custody to Federline. Spears will pay her former spouse $20,000 -a-month in child support and retains her visitation rights - she currently enjoys three days and one night a week with her sons.

However the Toxic hit-maker is now hoping the Los Angeles courts will amend the custody agreement by the end of the year, if she can prove she is fit to take care of the boys.

A source tells British newspaper the Daily Mirror, "Britney is doing the utmost to stay out of the limelight and lay low, and just focus on her work. She is determined to be taken seriously by the courts; she wants regular drug and alcohol tests to prove she is a reformed mom. She thinks that by ditching the pink wigs and bad boyfriends it will help her case."

And a representative for Federline has agreed officials could review the couple's current custody agreement - and allow Spears a more active role in her kids' upbringing.

The spokesman adds, "She has a chance. Kevin could end up co-parenting the kids together with Britney."

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(This news article provided by World Entertainment News Network)

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