Jessica Simpson Shows Off Son Ace Knute [PHOTO]

Jessica Simpson had her second child, son Ace Knute, on June 30. Since then, she's posed with him (and daughter Maxwell) for a magazine cover, but now she's sharing photos of, shall we say, a less commercial nature.

The black-and-white split, posted last weekend, features two photos of a beaming Jessica and baby Ace along with the words "3 months."

She had her children pretty much back-to-back, but doesn't seem any the worse for wear. Back in August, she told Us Weekly, "With two kids, we have our hands full, but every day is a new adventure. It's fun! I feel very at peace with being a mom."

Still, she admits it was "hard to do two so close together," adding, "I have this huge sense of accomplishment, and I feel in my heart that I'm done. But obviously, accidents do happen!"