Jessica Simpson is hurt by cruel taunts about her weight.

The Fashion Star mentor has been paid four million dollars by Weight Watchers to lose the weight she put on after giving birth to her first child Maxwell in May and promote their brand and although she has dropped 40lbs in four months, her cruel detractors have hit out at her for not losing the remaining 40 already.

"For years, Jessica has been OK with her body and everyone loved her for that. But now she's not feeling the love and she doesn't like it. She's trying to conceal her hurt feelings with humor right now. She uses jokes and goofiness to hide the fact that she's really sensitive," a source said.

Jessica unveiled her weight loss on TV last week and pals say she worked incredibly hard since giving birth to lose the extra weight. "The past few weeks were really difficult because the pressure was enormous. She knew everyone would be judging her. She was proud of her progress so to face all these cruel taunts now, it stings," the source added to In Touch.