Lopez’s twins Max and Emme, 13, and Affleck’s son with Jennifer Garner, Samuel, 9, may be a little too young to have experienced “The Simpsons” in the same way as their parents, but that didn’t seem to be diminishing their enjoyment of the day at all.

Affleck, 48, opted for a mask — as did Samuel — and a casual, hoodie-and-jeans outfit, while Lopez, 51, looked as preternaturally ageless as ever in a white, cropped tank top and cream-colored drawstring pants, which she accessorized with a pink bag.