When it's your birthday and you're feeling...

A photo posted by Lucy Liu (@lucyliu) on

Lucy Liu’s little boy, Rockwell, might be the cutest baby ever. The Elementary star shared an Instagram photo of her son wearing an “I’m All That and Dim Sum” onesie on her 47th birthday on Wednesday, Dec. 2.

“When it’s your birthday and you’re feeling…” she captioned the cute snap, giving herself and her little guy a shout-out.

Liu, who is generally private about her personal life, welcomed Rockwell Lloyd Liu via a gestational surrogate in August. The Charlie’s Angels actress announced the happy news via Instagram, posting a sweet black-and-white photo of herself holding Rockwell with the caption: "Introducing the new little man in my life, my son Rockwell Lloyd Liu. In [love]!"

Alongside a second photo, the new mom gushed: “Rockwell and I so appreciate all your warm wishes!”

Rockwell is the first child for Liu, who previously dated Noam Gottesman, Zach Helm, and Will McCormack.

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