Jessica Simpson is showing off the first pictures of her son, Ace Knute, her second child with fiancé Eric Johnson. They also have a 1-year-old daughter, Maxwell Drew.

Dressed in all white, the 33-year-old new mom of two holds her two babies on the cover of the September 9. Issue of Us Weekly.

“With two kids, we have our hands full, but every day is a new adventure," she gushed. "It's fun! I feel very at peace with being a mom."

The fashion designer, who gave birth to Ace on June 30 and found out she was pregnant with him less than six months after giving birth to Maxwell, says she thinks she’s done having kids.

“Pregnancy is a lot. It was hard to do two so close together," she said. "I have this huge sense of accomplishment, and I feel in my heart that I'm done. But obviously, accidents do happen!"

Simpson recently shared a new picture of her daughter on Twitter, writing, “Maxwell is crazy beautiful.”

Simpson and retired NFL player, Johnson, got engaged in 2010 but have since had to postpone their wedding a few times due to back-to-back pregnancies.

“We’ve had two different wedding dates, but he keeps knocking me up,” she has said. “We’re doing it very backwards, I know.”

image: Us Weekly