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Erika Christensen, Instagram

Instagram

World, meet Erika Christensen's baby girl!

The Parenthood star shared the very first photo of her little bundle of joy, Shane, on Instagram earlier this evening.

"Week one down with the new BFF," the proud new mama wrote as a caption to the sweet family pic.

"Our girl Shane is killing the newborn game."

Erika is shown giving her newborn a huge kiss on the cheek while the two spent quality time at home.

The 33-year-old gave birth to baby Shane last week at her California abode, People confirmed at the time.

The adorable one, who weighed in at 6 lbs., 3 oz., is the first child for Erika and her husband, cyclist Cole Maness.

Erika first announced that she was expecting a baby back in March via Twitter by posting a photo of herself with a puppy.

"This boy is getting a little sister. A human sister…She'll make her first appearance tomorrow at #Confirmation."

Then, as she promised, Erika debuted her baby bump the very next day at the premiere of the HBO film starring Kerry Washington.