Meet Jessica Simpson's baby Ace.

Two months to the day after welcoming her second child with fiance Eric Johnson, Simpson finally debuted her son on the cover of Us Weekly. Posing with baby boy Ace, daughter Maxwell, 15 months, and former NFL star Johnson at their home in Hidden Hills, Calif., on Aug. 12, Simpson gushed about her big family.

"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 said. "It's fun! I feel very at peace with being a mom."

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

Us Weekly exclusively revealed in November 2012 that Simpson was pregnant again just seven months after Maxwell's birth.

After about six months of dating, Simpson and Johnson, a Yale grad and former NFL player, got engaged in fall 2010, but were forced to postpone their nuptials twice due to her unexpected, back-to-back pregnancies.

According to reports, Simpson wants to tie the knot before she has any more children.

At the Weight Watchers spokeswoman's April 14 baby shower, she "was telling friends she wanted to get married a few months after the baby is born," the source told Us Weekly. "Jessica said, 'Let's have this wedding already before I get pregnant with another one!'"