Celebs turned out in force to toast the future success of the rugby heroes' new venture The Bridge 1859 - and it appears Mrs Kearney helped her rugby star sons decorate their new pub.
Former Miss World Rosanna Davison, presenter Maia Dunphy and TV3's Laura Woods were there to mark the opening of the new bar.
The Bridge 1859 bar, a stone's throw from Leinster rugby's HQ, is co-owned by Jamie Heaslip, Sean O'Brien and Dave and Rob Kearney.
The players undertook the renovation of the former Bellamy's pub alongside Grafton Lounge owner Noel Anderson.
"I'm really excited about the pub - it's come up really quickly," Rob told the Herald.
"I think it was only 14 weeks in the making, but it's cool, I'm enjoying it."
When asked if the boys will be in The Bridge after matches, Rob said they would but there'll be no lock-ins.
"Well yeah, of course we'll be in, the only night we'd get to have a few drinks is after a game," he said.
And generous Rob even paid for two rival Munster players to have their lunch this week. "We had Conor Murray and Peter Mahony in this week and we bought them their food," Rob laughed.
Meanwhile, Rob's brother Dave has been doing a different style of training - learning how to pull a pint.
"I've been doing a bit of training behind the bar which was good craic, but it's not too bad, you get the hang of it pretty quick," he said. "I've been in a fair bit over the past few weeks, we've been in for food and for game nights so I'm looking forward to getting more involved when it's busy."
Despite its owners, it's not a sports bar and pictures of the Leinster and Ireland stars as children adorn the walls. And Dave even admits that his mother Siobhan Kearney picked out the photos.
"Yeah my lovely mum selected them, they're funny enough and they're something different and I think they look well," he said.
Jamie said they had wanted to give the pub a new name while remaining true to the area.
"We wanted a name that was easy to roll off the tongue in the RDS or the Aviva - let's go to The Bridge for one."