Liv Tyler revealed her newborn son's name via Instagram on Friday, Feb. 20 -- find out what it is and see a new photo! Credit: David M. Benett/Getty Images

She's ready to reveal! Liv Tyler announced her newborn son's name for the first time via Instagram on Friday, Feb. 20.

"Sailor Gene Gardner @davidgardner76," she captioned a new pic of her baby boy. The Leftovers actress kept Sailor's face hidden, but did share a photo of him holding onto a necklace featuring a tiny anchor.

????????Sailor Gene Gardner ???????? @davidgardner76

A photo posted by Liv Tyler (@misslivalittle) on Feb 20, 2015 at 12:06pm PST

Tyler, 37, and her boyfriend David Gardner welcomed their first child together six weeks early on Feb. 11. Steven Tyler's daughter is already mom to son Milo, 10, whom she shares with ex-husband Royston Langdon.

On Valentine's Day, Gardner shared the first pic of the couple's tyke via Instagram. "Our little one has arrived…" he gushed.

Our little one has arrived...Beautiful baby boy...Happy Valentines Day @misslivalittle ????????????

A photo posted by David Gardner (@davidgardner76) on Feb 14, 2015 at 9:44am PST

Tyler has been keeping a low profile since giving birth, but did brave the freezing NYC temperatures on Thursday, Feb. 19. She wore minimal makeup and bundled up her post-baby figure in an oversized peacoat