TMZ says that Britney�s transformation has been �of the most amazing turnarounds in celebrity memory�.

Sources have told the website that Britney�s ex Kevin Federline, met up with the faded pop princess  had on Sunday and the pair had an "amazing meeting".

According to the source, not only are the pair getting along, they are close to hammering out a custody settlement.

Britney and Kevin have apparently agreed to a 50/50 split with physical custody of their two children Jayden james and Sean Preston, with the plan being for Britney to eventually gain primary custody and Kevin to have visitation rights.

Britney�s sister Jamie Lynn and her mom Lynne have been at Kevin�s house helping him look after the cildren while Spears has been in rehab.

It seems to have worked, with TMZ revealing Spears has �literally turned her life around�.

Looks like the Spears comeback album may not be so far away after all�