Jennifer Lopez praised abs-olutely amazing dad Ben Affleck on Fathers Day Sunday. (See the images below.)

Dubbing her Instagram a Daddy Appreciation Post, she wrote, Happy Fathers Day Papa. And Happy Fathers Day to all the amazing Papas out there!! We love you and appreciate you more than you will ever know.

But Lopez, who married Affleck nearly a year ago in a storied renewal of their relationship, appeared to be really appreciating hubbys stomach muscles.

In a selfie, the bearded Oscar winner, who stars as Batman in the just-opened Flash, shows off a shredded physique.