Ben Affleck and Jennifer Garner brought the whole family together for an afternoon with his mom … and, the two are all smiles in these pics.

The stars were spotted out with two of their children at the Moving Arts Theatre in Los Angeles Friday … striding up to meet the rest of their party with huge grins on their faces.

Affleck’s clad in a black jacket over a white t-shirt with a pair of khaki pants … hands tucked into his pockets. Garner’s got a gray and black striped sweater with a pair of blue jeans on — clearly, it’s a low-key evening with the fam.

They look like a happy group here … and, clearly Ben and Jenn are killing the coparenting game.

As we’ve told you before, these two have no plans to get back together … Jennifer’s in a committed relationship with boyfriend John Miller. The two have a pretty low-key relationship — but, we have seen them locking lips on occasion.

Ben married — and divorced — Jennifer Lopez in the years since he and Garner split … so, they’re both far removed from their years together.