Jessica Simpson 'pregnant with second child

Jessica Simpson is pregnant with her second child just seven months after having daughter Maxwell, it has been claimed.

The 32-year-old mother, who has dropped four stone since giving birth in April, is not thought to have planned the pregnancy.

'It definitely wasn't planned. But yes, Jessica is pregnant again', a source revealed to Us Weekly.

It will be the second baby for the Fashion Star mentor and fiance Eric Johnson.

'She really is overjoyed!', said the source.

According to TMZ, the star lost a staggering 60 pounds on a healthy eating plan filled with low-fat smoothies, protein and plenty of vegetables as part of a $4million sponsorship with Weight Watchers.

Place for one more? Slimmed-down Jessica Simpson tweeted this picture of her family at Halloween

The nutritious plan, obtained by TMZ, was devised by her former private chef and adheres to the WeightWatchers point system where each food has a 'points value' based on calories and fat content.

The plan, featuring dishes such as super low calorie egg white omelettes, chicken satays, whipped chick peas, soba noodles and shrimp skewers, has clearly worked wonders.

Her diet began in July with a 15-day smoothie diet consisting of five days of three smoothies a day, gradually working in snacks and meals over time.

On Thanksgiving Jessica shared a card on her official website and Twitter page with the message: ‘I am so grateful for my new lil family! Happy Thanksgiving everyone!’

It is unclear whether Jessica spent Thanksgiving with other members of her famous family.

Happy Thanksgiving: Jessica Simpson created a card starring fiance Eric Johnson and daughter Maxwell for Turkey Day