Britney props up Coolest celebrity mum poll

Britney Spears has come last in poll of kids in the US to find the Coolest Celebrity Mum.

In honour of Mother's Day in America next weekend, America Online polled a group of 75,000 kids aged six to 12 to ask them who would make the coolest celebrity mum.

Jessica Simpson topped the poll while Jennifer Lopez and Gwen Stefani also won more votes than the pregnant Britney.