Sean Parker and wife Alexandra welcome second child! Credit: Michael Buckner/Getty Images

So cute! Napster founder Sean Parker and his wife Alexandra welcomed their second child on Monday, Dec. 1, a son named Zephyr Emerson.

Alexandra, a singer/songwriter, shared the happy news with followers on Instagram on Wednesday, Dec. 3, posting a picture of herself holding little Zephyr with the caption: "He's here!!! Zephyr Emerson Parker. Our newest family member born the morning of December 1st." 

He's here!!! Zephyr Emerson Parker. Our newest family member born the morning of December 1st

A photo posted by ALEX PARKER (@alexandralittlemermaid) on Dec 12, 2014 at 10:38am PST

In another snap, captioned "happy family," Sean joins his wife and looks lovingly at his new son. 

The couple, who wed in a lavish multimillion dollar ceremony at The Venetian Inn in Big Sur, Calif. in June 2013, are already parents to nearly 2-year-old daughter Winter.

Sean, who made millions from Napster and Facebook shares, was portrayed by Justin Timberlake in 2010 flick The Social Network.