Jessica Simpson Debuts Baby Son Ace Knute Johnson: "I Feel Very at Peace"

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Boy, meet world! Almost two months to the day after welcoming her second child with fiance Eric Johnson, Jessica Simpson is still basking in the glow of new motherhood -- and proudly showing off her adorable new son on the cover of Us Weekly!
PHOTOS: Jessica's second pregnancy
Posing with baby boy Ace, daughter Maxwell, 15 months, and former NFL star Johnson at their home in Hidden Hills, Calif., on Aug. 12, the fashion mogul was positively radiant. In an exclusive interview for the Sept. 9 issue of the magazine, she opened up about becoming a second-time mom, dealing with "hurtful" weight bullies, and planning for the future of her family.
PHOTOS: Maxwell's baby album
"With two kids, we have our hands full, but every day is a new adventure," the 33-year-old singer, who gave birth to Ace via planned C-section on June 30, told Us. "It's fun! I feel very at peace with being a mom."
PHOTOS: Jessica's first pregnancy
That said, she's not eager to add to her brood anytime soon -- if at all. Simpson found out she was pregnant with Ace less than six months after giving birth to Maxwell, so she's looking forward to just settling in as a mom of two.
"Pregnancy is a lot. It was hard to do two so close together," she confessed to Us. "I have this huge sense of accomplishment, and I feel in my heart that I'm done. But obviously, accidents do happen!"
PHOTOS: Jessica's craziest Twitpics