Britney Spears tests parenting skills

Britney Spears has been looking after husband Kevin Federline's first child in preparation for motherhood, according to The Sun today.

Federline already has two children from a previous relationship with Shar Jackson. Jackson allows Britney to look after two-year-old Kori, but not her nine-month old son Kaleb, because she feels that he is too young.

Britney, who is four months pregnant, took Kori to a Santa Monica studio with her, as she discussed plans for her new reality TV series, Chaotic.

However, Jackson recently expressed doubt on Britney's skills as a mother.

"I don't know if Britney realises how hard it will be," she explained last month.