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Ryan Gosling, Eva Mendes

PacificCoastNews.com

It's official: the world just became a little more beautiful...because Eva Mendes and Ryan Gosling have welcomed a baby girl! 

The 40-year-old actress gave birth to the couple's first child together on Friday in Los Angeles, E! News has confirmed. The notoriously private pair, who never officially confirmed that they were expecting, have yet to publicly share the baby news and it's unlikely that they will formally announce the birth. 

But that doesn't mean that the lovebirds, who first began dating back in September 2011, haven't been enjoying their baby bliss in private! 

"Eva is so happy she's a mom, their baby girl is perfect!" a source tells E! News of the proud parents' bundle of joy. "They are at home now with the baby and Eva is feeling great she says.

Ryan Gosling, Eva Mendes, The Place Beyond the Pines

Dave Allocca/Startraksphoto.com

"She's so good with kids and has been wanting this a really long time," the insider continued of the Hitch star. "When she found out she was having a girl, she was freaking out. She kind of wanted a girl deep down, but of course just wants a happy and healthy baby! Ryan is saying he is going to be overpowered with girls in the house and is gonna have to be extra manly around the house!" 

While the pair has yet to reveal the name of their little one, Mendes continues to tell family and friends "how in love she is" with her darling daughter. "Everyone is saying the baby looks like Eva and has her features," the source said of the wee one, who we can only presume is one gorgeous little girl. 

The pair is clearly over the moon when it comes to the newest edition to their family (remember, Gosling previously said "I'll make movies until I make babies!" ) and the duo even shed a few tears of joy upon first setting sights on their bundle of joy. 

"It was very emotional for Eva and Ryan," the insider said of their daughter's birth. "They were both in tears when they saw their daughter for the first time!" 

Ryan Gosling, Eva Mendes

CYYZ/AKM-GSI

Meanwhile, the super-private lovebirds seem stronger than ever after first stepping out as a couple about three years ago. 

"All her friends love Ryan and Eva together," the source dished of the twosome. "He tells her how sexy and perfect she is all the time...he really is like Noah in The Notebook! It's kind of an inside joke, but he's really romantic. They are both so happy and in love. They wanted to start a family for a while now." 

Sounds like a fairy tale come true. Congrats, you two!