Photos of the outing show the stunning reality star, 31, hand-in-hand with her cute little relative, before picking him up for some after service snacks.
The pair were all smiles as they went for lunch at Marmalade Cafe in Los Angeles following the Sunday service.
So what did they wear for their alter bound outing?
Wearing a beige, peplum dress and sky high heels Kim looked deliciously demure, but it was her sister Kourtney‘s son, who stole the limelight in his trendy outfit.
Shielding his eyes from the blistering California sunshine with a pair of kiddie sunglasses, Mason, two, also sported some hightop, leather sneakers and fashionable white shorts.
Mason has just become a big brother to baby Penelope,who was welcomed into the world by Kourtney and her beau, Scott Disick, last month.
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