Socialite Nicole Richie is set to triumph over fellow new mum Christina Aguilera - after selling more copies of her People magazine cover issue.

Both stars were featured on their own February covers of the U.S.

publication showcasing their new infants, who were born on the same weekend in January (08), but early sales predictions strongly indicate The Simple Life star is on target to sell more than 1.8 million copies - while Aguilera is said to have sold far less.

A spokesperson for People magazine would not confirm sales figures to MSNBC’s The Scoop as it was too soon to calculate the exact number of issues sold.