John Legend and his daughter Luna starred in a Pampers ad last year.
And the family duo are back together to advertise the diaper brand in a new commercial that will air with the Super Bowl this Sunday.
In a brief teaser for the ad released on Saturday, the pair are seen to have company - John, 40, and Chrissy Teigen's eight-month-old son Miles.
Last year's commercial saw John changing his daughter's diaper and singing to her: 'Somebody's got a stinky booty! Her name is Luna and she made a poopy.'
In the new commercial, John opens up his son's diaper and begins to sing: 'Somebody's got a stinky b-oooh!', only to be overwhelmed by the smell.
'I'm gonna need some backup on this one,' he says, turning to Luna, who is standing a few feet away with a plastic pack of wet wipes.
Luna, who is now two years old, keeps a safe distance away from the full diaper but tosses a fresh wipe toward her father.
The wipe lands on the floor near John, who looks back at the crew lurking off-screen and says: 'Guys?' in a probably vain attempt to get a little assistance.
John and Chrissy married in 2013 by Lake Como, the shores of which also play host to the summer home of George and Amal Clooney.
Working for Pampers has become something of a family business, as Chrissy is also Creative Consultant on the diaper and wipe line Pampers Pure.
While Chrissy was pregnant with her younger child last year, she starred with Luna in a Pampers ad of her own, three months before John's commercial came out.
John told People recently that he and Chrissy divide up diaper tasks on an ad hoc basis. 'It’s just whoever is able to do it at that time,' he shared.
'It has never been a thing where it’s like: "You have to do it or I have to do it." It’s like: "Okay, I have him right now and his diaper needs changing, I smell it, I’m going to change him." I’ve always been like that, and never felt any hesitancy to do it.'
© Associated Newspapers Ltd.