Not that we're complaining, of course.
After all, who could ever tire of seeing cute pics of the mother of two's little ones, right?
"Diaper buddies," she wrote as the caption.
Yep. Keep 'em comin, Jess. Keep 'em comin'!
Meanwhile, earlier in the day, Simpson also shared a snap of herself and fiancé Eric Johnson taken at the White House Correspondents' Dinner in Washington, D.C., last Saturday.
"First date since having baby Ace," the fashion designer wrote alongside the shot.
At the big event, Simpson showed off her fabulous figure in a flowered Carolina Herrera gown that she wore with Neil Lane earrings and a bracelet. For the after-party, she changed into a low-cut black dress that featured a thigh-high slit.