The London-based actress, whose industry pals include Dublin star Amy Huberman, welcomed her second child with former TV presenter Andrew Fowler (pictured) into the world at the weekend.
"The newest member to our team. Luca John Fowler born last night 2.24am at 8lbs," said Tara.
The former model, who once dated John Lennon's son Julian, is over the moon with motherhood and said: "The baby boom is in flow. I am delighted."
Tara's acting pal Leigh Arnold, who is also based in the UK, also gave birth to her second son Flynn last month.
The Deception star already has a son Hunter (13 months) with partner Steve Davies.
Other Irish celebs who have just welcomed baby boys include TV3 presenters Laura Woods, Anna Daly and presenter Brian Ormond and his model wife Pippa O'Connor.