There’s a wonderful baby secret behind JESSICA SIMPSON‘s recent weight gain!

Gorgeous Jessica – who packed on 15 pounds in two months – is sporting a happy glow because she’s actively trying to conceive with her hunky boyfriend of only four months, Eric Johnson, reveal sources.

And the best news of all is that the singer may already be pregnant, say her friends.

The Dukes of Hazzard stunner is so thrilled over the prospect of becoming a mom, she’s started "eating for two," say insiders.

"It looks like Jessica’s dream of having a baby is finally coming true," a close friend told The ENQUIRER.

"She’s crazy in love with Eric – so they’ve decided to make a baby."

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