"Baby Duhamel coming soon 🤍," they captioned the photo.
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Audra also shared their post on her Instagram story and added, "I cannot wait to be a mama... Hi daddy @joshduhamel."
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According to People, Audra and Josh married almost exactly a year ago on Sept. 10, 2022.
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Over the weekend, Audra celebrated their first anniversary with a post on Instagram, writing "Happy First Anniversary sweet man 🤍 oh how I prayed for you."
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Josh is a father to one child, a 10-year-old son Axl with Fergie. According to People, Josh and Fergie were married from 2009 to 2019.
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And it seems the blended family is supportive of one another as Fergie left such a supportive and sweet comment on Audra and Josh's Instagram post.
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"I am truly happy for you guys🥰🥰 Axl can’t wait to be a big brother," she wrote.
@audramari / @joshduhamel / Instagram / Via Audra Mari
Fergie was far from the only celeb to comment on the couple's post. Ashley Greene, Holly Robinson Peete, and Jerry O'Connell also sent their well wishes. There's love all around!