Liv Tyler's boyfriend David Gardner shared the first photo of the couple's new born son via Instagram on Saturday, Feb. 14 Credit: David M. Benett/Getty Images for Dazed Group

Proud daddy! Liv Tyler's boyfriend David Gardner shared the first photo of the couple's newborn son on Saturday, Feb. 14.

"Our little one has arrived...Beautiful baby boy," the sports agent captioned. "Happy Valentines Day @misslivalittle." In the pic, their little guy (his name has yet to be revealed!) held onto Gardner's finger.

The Leftovers actress, 37, gave birth six weeks early on Feb. 11. She's already mom to son Milo, 10, whom she shares with ex-husband Royston Langdon.

Two days after welcoming the new addition, Tyler's rocker dad Steven Tyler shared his excitement via Facebook.

"When I got the call that Liv was going into labor, after crying like a baby myself, I immediately dropped everything and went to to the airport to get on the next available flight," he wrote on Feb. 13. "When I landed I kept calling my daughter Mia who was already helping Liv."

"She kept giving me minute by minute updates, 'HURRY THE BABY IS COMING!' I made it RIGHT in time before my second grandson entered this world," the Aerosmith frontman continued. "It was another (God wink) moment of a lifetime for me."