Olivia Munn's daughter couldn't be cuter on her first Halloween.

On October 31, the 44-year-old actress shared an Instagram reel showing off her and her little daughter Méi's costumes. In the adorable video, Munn is an omakase chef, while Méi, whom she welcomed with husband John Mulaney on September 22, wears salmon, tuna and egg-colored onesies as a sushi piece.

The proud mother places her newborn on a “rice” pillow and wraps him in a “seaweed” blanket.

“This is such an easy way to make beautiful sushi at home,” says a voice in the background of the video.

“Omakase for Halloween 🍣 🎃,” she captioned the reel, adding, “Happy Halloween!!” via a snap of the costume posted to her Instagram Stories.

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Munn and Mulaney are also parents to son Malcolm, 2.

The new mother of two recently shared an adorable video of Méi, who began the clip by sitting up on a couch and wearing a white knit romper.

As the video continued, Méi began to fall over, toppling to the side as she approached the sofa cushion. “The slowest fall ever recorded,” Munn wrote in the video. “My girl,” Mulaney wrote in the comments.

Earlier this month, Munn opened up about the challenges she's experienced transitioning to becoming a mother of two. In several posts shared on her Instagram Stories, Munn joked that a photo of her staring blankly into the camera was “proof” that she “made it through last night with both kids.” .

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“Having a toddler and a newborn at the same time is not for the faint of heart,” she added in the caption of the selfie, in which she posed with her chin in her hand while wearing a casual pink sweater and glasses.

In another post, Munn showed some of her recent Google search results for the question, “Why do newborns always stay awake?”

The Google results state that “newborns often stay awake at night because they do not have an established sleep-wake cycle” and “do not understand the difference between day and night.”

“I hope everyone has a great evening,” Munn dryly joked in the caption of the screenshot.