Britney Spears is determined to be a fun stepmother to her fiance KEVIN FEDERLINE's children.

The TOXIC singer, 22, is planning to have a mini-fairground built in the garden of her new $4 million (GBP2.2 million) Malibu, California home - so that her beau's two-year-old daughter KORI and three-week-old baby KALEB can play when they visit their father and his future wife.

A source says, "Britney is really excited about playing the cool stepmom, and she doesn't think children love anything more than a fair out the back.

"She knows that it is a bit over the top but if it brings a smile to the children then she will be happy.

"Britney also thinks that when the toddlers get older, they will want to have a place where they can play and laugh together.

"She is aware how expensive it is but is still desperate to have a fun park."

03/08/2004 14:06