Pop superstar Britney Spears has been putting in some practice for future motherhood - by caring for the children of her fiance Kevin Federline.

The TOXIC singer was spotted paying special attention to Federline's two-year-old daughter KORI during a recent shopping trip in Malibu, California.

An onlooker says, "Britney looked a real loving mother. She was doting on the child and is clearly very fond of her.

"Kori was having a great time and looked to be really happy."

Dancer Federline has two children from his relationship with MOESHA actress SHAR JACKSON - Kori and baby boy KALEB.

08/09/2004 13:48