Chrissy Teigen and John Legend share precious family piano sing-a-long with baby Luna

John Legend and Chrissy Teigen gave fans a glimpse of a particularly precious family moment on Thursday (Sept. 2) as the parents serenaded their baby girl, Luna Simone. As John repeatedly played the same ditty on the piano, the four-month-old bounced in mom's arms while watching her dad.

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The All of Me singer looked relaxed in a pair of shorts and a black T-shirt as he effortlessly played the piano while watching for his baby girl's reaction. Chrissy, clad in a loose white sleeveless dress, became increasingly amused after she realised that her husband wasn't planning to end the song, finally playfully telling him to stop after he'd performed the same tune several times.

TAP TO VIEW GALLERYChrissy Teigen, John Legend and baby Luna Stephens in a frontal harness worn by her dad The new parents spent quality time with their baby girl

Posting the sweet video to her 8.2million followers, the Lip Sync Battle host joked: "Never ending song." Fans of the star were quick to comment on the video, with one writing: "I'm so happy for you guys, family is everything," while another wrote: "Love you guys! Beautiful couple!"

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Little Luna is growing up fast, and looked precious in a blue babygro. Chrissy regularly posts snaps of her daughter across her social media channels, and recently shared a close-up photo of Luna with a toy giraffe, joking that they have "full conversations" together.

John Legend, Chrissy Teigen and baby Luna  Stephens in a stroller The proud parents regularly share snaps of baby Luna on social media

She also shared a video of Luna sat between cushions after she turned four-months-old, captioning it: "4 months. Enjoy the month birthdays while you can, buttbutt." She wrote across the video: "I now celebrate monthly birthdays I guess."

The 30-year-old has also opened up about motherhood, saying: "It's been really exciting and fun, and every day is so different, and seeing all her little changes is so cute."

the never-ending song

A video posted by chrissy teigen (@chrissyteigen) on

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