Jessica Simpson talks bumps and baby weight

Jessica Simpson was among this year’s high-profile ladies with overly documented pregnancies, and she’s comparing her nine months of baby growing to that of Kim Kardashian and the former Kate Middleton.

The 33-year-old Fashion Star mentor’s weight was always commented on before she became pregnant with her first child, Maxwell, 15 months. Simpson, who is engaged to football player Eric Johnson, later signed on as a spokeswoman for Weight Watchers to lose the weight.

The gig was cut short when she announced that she was pregnant with her second child, a boy named Ace Knute who was born June 30.

“I am definitely one of those pregnant women who just gains a lot of weight,” Simpson told Us Weekly. “I have really big boobs, I have my curves and I just gain weight. I can’t help it.”

“It’s been six weeks since I’ve had my baby now, and I feel great,” she added. “It’s OK to gain weight, and it will always come off.”

That non-chalance was supported by a wardrobe decision she made earlier this week. The former pop diva took a shopping stroll in a pair of Daisy Duke shorts reminiscent of her Dukes of Hazzard days. Well, Los Angeles is currently dealing with a heat wave.

“I will never understand why people give pregnant women such a hard time,” Simpson said. “We are creating a human life: I think we get every excuse in the world to eat a doughnut!”

Like Simpson, Kardashian, 32, put on a few pounds while she was with child and described her pregnancy as “painful.” On top of it all, Kim’s every move, including her daily maternity garb, was documented by paparazzi and critiqued by many. Her daughter with Kanye West, North, was born about a month early on June 15, and the reality TV star has kept a low profile, reportedly so she can wow naysayers when she shows off her post-baby slimdown.

“I felt for Kim — I knew exactly what she was going through,” Simpson said. “I send a lot of love her way, and I know she’ll come back with a bang.”

In contrast, Simpson highlighted Catherine, the Duchess of Cambridge’s pregnancy with recent arrival Prince George. The wife of Britain’s Prince William barely put on any excess weight and only appeared pregnant because of her baby bump.

The duchess, 31, made her first official appearance on August 25 in Anglesey, Wales. It was about a month after she’d debuted George outside St Mary’s Hospital in London.

Simpson was among the many who couldn’t believe how quickly the duchess snapped back into pre-pregnancy shape.

“Kate Middleton was glowing throughout her pregnancy,” she said. “A lot of pregnant moms were looking at her like, ‘How do you do that?!”

Maybe it starts with marrying a prince...