Zuma Nesta Rock Rossdale pictured with mom Gwen Stefani.

It’s Zumaaaahhhhhhh!

Kingston Rossdale played with Ruby Maguire at the Coldwater Canyond Park yesterday. It wasn’t their first play date. Kingston, who is the son of Gwen Stefani and Gavin Rossdale, and Ruby, who is the daughter of Tobey Maguire, also played together earlier this month at a pumpkin patch in Beverly Hills.

If arranged marriages existed in Hollywood, these two would already have a date at the altar years from now. So cute.

Zuma Nesta Rock Rossdale, Gwen Stefani and Gavin Rossdale’s new baby boy, went to the Beverly Hills Library on Wednesday to get his picture taken for his passport. In case you’re wondering where you’ve seen Zuma before, maybe the picture below will help jog your memory. It’s Jack Jack from the Incredibles.

Daddy loves you little guy.

Zuma’s name is also a bit of a mystery, so we’ve got some theories:

There is a beach in Malibu called Zuma where Gavin supposedly had an epiphany early one morning when he realized he wanted to be a famous rockstar. Big bro Kingston is also named after a location—Kingston, Jamaica, home to Bob Marley.

Nesta: This is Bob Marley’s middle name—G&G kinda have a thing for the reggae legend, obvs. This part of I Am Legend must have really affected them.

Rock: Gavin’s band falls into this genre of music, and Gwen has an album called Rock Steady, although her more recent work would be classified as pop. However, if they used the name "Pop," that could be traced back to an ’N Sync song and that’s really not cool. Also, the whole family lives and dresses like rock stars, so it just probably seemed natural.

Gwen Stefani and Gavin Rossdale welcomed another baby boy into their family today. Kingston has a brother now. Woohoo!

Click the link below to find out the new baby boy’s name.

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Gwen Stefani checked into Cedars-Sinai Medical Center in Los Angeles, and is scheduled to give birth via C-section at 10 a.m. PST, according to In Touch.

Congrats to Gavin Rossdale, and Kingston.