Brian O'Driscoll and Amy Huberman have welcomed their second child, Billy O'Driscoll, this afternoon.
It's reported that Billy was born earlier today in Dublin to the star couple.
The choice of first name means the newborn will share his famous father's initials – no pressure.
Amy Huberman announced her pregnancy in early September, having kept it a closely-guarded secret for six months.
O'Driscoll has been keeping busy since his retirement from a legendary rugby career, with an analysis job at BT sport and the publication of his autobiography, 'The Test', in October.
Billy O'Driscoll joins his older sister Sadie, who was born in early 2013.