How nice .

Sofia Richiejust welcomed a new addition to her growing family!

Inan Instagram post, Sofia revealed that she and husband Elliot Grainge had welcomed their first child together, Eloise Samantha Grainge. “🤍5•20•24 best day of my life🤍,” she wrote in the caption, revealing that Eloise was born earlier this week.

As you might recall, Sofiarevealedthat she was pregnant back in January of this year — and she also explained why she decided to keep the news secret for a bit.

“Pregnancy is really scary and you want to protect that space," she toldVogueat the time. “I didn’t realize there are so many milestones you have to hit and so many tests you have to take.”

“For me, it was really important to protect our mental health and our space as a couple.”

Now, with the arrival of Eloise, the celebs are offering their well wishes:

Even Elliot weighed in:

Congrats to the happy couple and their new addition to the family!

Sofia Richie stands outside wearing a long coat and holding a handbag as her photo is taken

Sofia Richie, Elliot Grainge, and two others pose together at a Grammy event

Elliot Grainge and Sofia Richie side by side at a Tommy Hilfiger event. Elliot wears a casual suit, and Sofia wears a trench coat and sweater over her shoulders

Sofia Richie stands on the red carpet, wearing an elegant black gown, with her hands resting on her baby bump

Elliot Grainge and Sofia Richie on the red carpet

Hailey Bieber's Instagram comment says "Congratulations" with two teary-eyed emojis and three heart emojis

Kylie Jenner's Instagram comment saying "congratulations" with celebratory emojis

Instagram post by Nicole Richie: "I now have a new favorite EG. sorry Elliot

Instagram comment by yolanda.hadid: "congratulations mamma" with a red heart emoji

Instagram comment by katyperry saying "Our QUEEN"

Instagram comment by user lilyjcollins: "Omg what a name!! So excited for you guys❤️❤️❤️”

Instagram comment by elliott_grainge saying, "Now it really is a family of three"