Mommy Melissa McCarthy’s Baby No. 3

Comedian and “Spy” star MELISSA MCCARTHY is hiding a hush-hush project that’s stamped “top secret!”

The 44-year-old actress and her husband, actor-director Ben Falcone, are being encouraged to add to their family, The National ENQUIRER has exclusively learned.

Friends have urged Melissa – already a mom to daughters Vivian, 8, and Georgette, 5 – to “celebrate her upcoming 10th wedding anniversary with the best present of all – a new baby!” an insider said.

“Melissa has always wanted three, so the new little one would complete their family.

“Another child will be the icing on the cake of Melissa’s recent good fortune!”

In the past five years, Melissa’s films, including “Bridesmaids” and “The Heat,” have earned over $750 million at the box office. She also won an Emmy for her work on the CBS sitcom, “Mike & Molly.”

But while flying high career-wise, the comedy queen has also faced some dire health issues.

As The ENQUIRER recently reported, the 5-foot-2 actress has been warned that her previous reliance on quick-fix weight losses – once dropping from 240 to 190 pounds in just a few months – could be dangerous.

According to renowned medical experts, Melissa’s yo-yo dieting could lead to heart disease, as well as breast, cervical and uterine cancers.

As a result, “Melissa has been slowly and steadily dropping extra pounds with a sensible, sustainable diet and moderate exercise. She’s the healthiest she’s been in years,” divulged the source.

The slimmed-down star, who will launch her own all-sizes fashion line later this year, cut a glamorous figure wearing a gown she designed to the “Spy” premiere on June 1 in the Big Apple.

The “Gilmore Girls” star has confessed that when she was pregnant with daughter Vivian, she ate whatever she wanted, and paid the price. She also struggled with post-baby weight gain after Georgette’s birth.

Said the source: “Melissa is playing coy about the real reason for her recent weight loss. She says it’s to be a good role model for her daughters and fans, but it’s actually because Melissa wants to be in tip-top condition” – perhaps for her late in life pregnancy!