Lay off my sister! That's the message [artist id="1241636"]Ashlee Simpson-Wentz[/artist] sent on Monday in a MySpace blog post about the wave of snarky stories and mocking headlines aimed at [artist id="1245169"]Jessica Simpson[/artist]'s apparent weight gain.

In a post titled, "Since when did a woman's weight become newsworthy," Ashlee wrote that she was "completely disgusted by the headlines concerning my sister's weight. A week after the inauguration and with such a feeling of hope in the air for our country, I find it completely embarrassing and belittling to all women to read about a woman's weight or figure as a headline on Fox News."

The scrutiny of Simpson's weight is a result of photographs from the gone-country singer's performance at the Kiss Country Chili Cookout in Pembroke Pines, Florida, where the 28-year-old Simpson wore high-waisted jeans and a large belt that accentuated her curvy figure.

"All women come in different shapes, sizes and forms, and just because you're a celebrity, there shouldn't be a different standard," new mother Ashlee wrote. "Is this something you would say to your wife, daughter, mother, grandmother or even a friend? I seriously doubt it. How can we expect teenage girls to love and respect themselves in an environment where we criticize a size 2 figure? Now can we focus on the things that really matter."

Little sis isn't the only one coming to Jessica's defense. The "Newlyweds" star's former trainer, diet author Harley Pasternak, told "Extra" that Simpson's fuller figure is a good thing.

"She has curves where a woman needs to have curves," Pasternak told the TV show on Tuesday. "We all go a little bit up and a little bit down. But she's healthy.

"She's still sexy," he added. "She's still a beautiful woman. And I have no problem with the way she looks. I think if more people looked the way she looks now, the country would be a lot healthier."