Jessica Simpson hints at second pregnancy

U.S. actress, singer and fashion designer Jessica Simpson might be pregnant again.

On Christmas day the star tweeted this message "Merry Christmas from my family to yours" -- followed by a link showing this picture -- her daughter Maxwell with the words "Big Sis" spelled out in sand.

The twitter picture seems to confirm media speculation that she is expecting her second child.

Simpson had her first child, Maxwell Drew Johnson, in May.

She has since become a spokeswoman for Weight Watchers reportedly cashing in four million dollars (USD) from the endorsement.

A representative for Simpson was not immediately available for comment and it's unclear whether she will continue her diet during her pregnancy.