(PHOTO: Reuters/Mario Anzuoni)Actress and honoree Jessica Simpson poses at the Us Weekly Hot Hollywood Style issue party in Hollywood, Calif., April 26, 2011.

Maybe it's something in the water. Just seven months after giving birth to adorable baby girl Maxwell, Us Weeklyl is reporting that Jessica Simpson is pregnant again with her second baby. (See pics of first pregnancy below.)

Simpson, who mentors up-and-coming designers on "Fashion Star," and fiance Eric Johnson welcomed Maxwell Drew Johnson on May 1. The 32-year-old worked hard to shed 60 pounds of her pregnancy weight but it seems she will be putting them back on soon.

"It definitely wasn't planned. But yes, Jessica is pregnant again," an exclusive source tells Us Weekly.

So, will Maxwell be getting a baby brother or sister?

Simpson's rep has declined comment and called the magazine's report a "speculation."

Regardless of the gender, Simpson couldn't be happier, according to the source.

"She is really overjoyed!"

No word yet on what will become of her recent Weight Watchers ads. Simpson recently appeared in a pair of daisy dukes, which became one of her signature looks following her role in Dukes of Hazzard.

Meanwhile, as we and all the paparazzi are on baby bump watch, celebrate the joyous news with photos of Simpson during her first pregnancy.

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