Jessica Simpson's revealing twitpic.

Pregnant celebrities - Jessica Simpson brought out her 'magic sweater' in Hawaii to wear to cover her baby bump.

According to one report, the blonde mom-to-be has owned the sweater for several year (since 2005) and has been photographed wearing the sweater on multiple occasions though the years.

Jessica isn't totally covering up, though.

She flashed a ton of skin in the above photo she posted earlier on Twitter.

Weight Watchers is still hanging with the celebrity spokesperson, despite the fact she is pregnant again and off their diet plan.

After giving birth to Maxwell on May 1, Jessica was named the face of slimming brand Weight Watchers and worked to lose the 60 lbs she gained during her pregnancy.

And despite the fact she is already expecting again, she will remain the face of the diet company.

View Our Hot Pics Gallery

They tweeted: "Congrats to @JessicaSimpson, Eric and big-sister-to-be Maxwell! Your WW family is so thrilled for you. What an amazing year you've had! (sic)"
The firm have also announced they will continue to run ads promoting the 32-year-old beauty's 50lb weight loss, as well as pushing a new commercial in which she announces her pregnancy.

Praising her "successful" weight loss, the company added:

"Jessica will not be following the program during the pregnancy while her weight and well-being are monitored by her obstetrician."

Check out Jessica's magic sweater here.

(Image: Jessica Simpson/Twitter)