New mum Chezzi was equally delighted and shared the same snap welcoming her third bub into the world.
"(Sunday) looks a lot like Sailor but mostly she looks like Daddy. Beautiful big blue eyes and lots of fair hair!," she captioned the snap.
"I never thought my heart could feel so full! This has been the greatest week of my life. We never want to emerge from this beautiful baby bubble! It’s been the most wonderful feeling! Words cannot describe how in love we are right now.
"Promise to post more pics soon.. once we stop marvelling at her beauty I guess 💕."
This third pregnancy certainly wasn't an easy one for Chezzi, who suffered from Hyperemesis gravidarum in the early stages - a severe form of morning sickness.
However the mum-of-three always kept things candid on social media and revealed she craved foods including baklava and sour worms.
“I heard Chrissy Teigen ate so many sour lollies she burnt her tongue - OUCH," she revealed in September.
"I’m finding sucking on them helps give me a bit of energy and for some reason the sour taste I adore right now!”
Former Family Feud host Grant and his wife announced their pregnancy news back in August 2020 with an adorable video on Instagram that featured both Sailor and Scout.
"We have some exciting news..... coming 1 March 2021," Grant and Chezzi both captioned the video, which shows their two girls sitting at a table with a toy doll.
"So, we have some news. Our mum is pregnant! And mum's really sick. And she's been resting for days," the girls explained.