Chrissy Teigen and John Legend are expecting their third child together.

The 34-year-old Lip Sync Battle star has confirmed she and her musician husband, who are already parents to Luna, four, and two-year-old Miles, are set to expand their family after the music video for her partner's new single, Wild, appeared to show Teigen cradling a small bump.

Introducing the video on YouTube, 41-year-old singer said the music videos his wife has appeared in have been ''chronicling [their] family's growth.''

'We have All of Me, the marriage, no kids yet. Love Me Now with Luna and this one with Miles.

''It's been chronicling our family's growth and our journey and we're so happy that this video is the next chapter.''

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Shortly after the video premiered Teigen took to social media to confirm the happy news.

She shared a photo of herself showing off her blossoming bump and wrote: ''Look at this third baby s***. Oh my god.''