It's the Brady Bunch!
While Bundchen stayed home with new daughter Vivian, who was born on Wednesday, the football star enjoyed a play date with his and Gisele's child, son Benjamin, who celebrated his third birthday on Saturday.
Also along for the happy outing were Tom's son John, 5, from his previous relationship with actress Bridget Moynahan, and the New England Patriots quarterback's mom Galynn and dad Thomas Sr. – and even the family dog bounded along on the Sunday walk to the park!
Brady has parenthood down pat, as he pushed the laughing boys on a swing, carried them on his broad shoulders, and pushed them in a stroller.
John and Ben both relished being jostled around in a rubber tire swing, and the boys look adorably close, as John at one point sat on little Ben's lap in the stroller. Tom showered both sons with affection all day, lifting Ben up into the air and then kissing John on the swing set.