The 43-year-old model welcomed her third child, son Grey Douglas Stuber, on Tuesday.
Brooks and Scarlett already love their new baby brother.
Molly Sims took to Twitter on Friday to share sweet new family snaps after welcoming her son, Grey Douglas Stuber, on Tuesday.
WATCH: Molly Sims and Scott Stuber Welcome Baby No. 3, Share Adorable First Photo
The model's older children, 4-year-old Brooks and 1-year-old Scarlett, visited the hospital to meet their new baby brother, and according to Sims, it couldn't have gone any better.
"My big baby girl Scar pretending to feed her new baby #imighthavecried #firstvisit," Sims captioned a photo of Scarlett holding bottle near Grey's mouth, while she tends to the newborn.
"Brooksie told me 'I got this' Sooo Proud of his new baby Grey 'Jack and the Beanstalk Batman' #finallyhere #firstvisit," she wrote alongside another sweet pic of Brooks holding his little brother, referencing the name her son picked out for the new addition.
RELATED: Molly Sims Is Having a Boy, and Her Older Son Has Already Adorably Named Him!
Sims announced on Wednesday that she and husband Scott Stuber had welcomed their third child.
"???Welcome to the world Grey Douglas Stuber 1.10.17 Words do not express how grateful and happy we are to have another piece of magic added to our little tribe! #blessed ?#tribeof5," she captioned the adorable announcement photo.
See more on Sims' road to baby in the video below.