Born on Dec. 3, 2014, Hannah Mali Rose Lanfer is the couple's youngest child and only daughter. Grey's Anatomy fans may remember when Sarah was pregnant with Hannah and went into labour almost a month earlier than expected, resulting in an 11-day stay for baby Hannah in the NICU. "It's the worst thing in the world because you go into the hospital and you expect to leave with your baby. We didn't know how long she would have to be there," Sarah told People.
Nowadays, Hannah is a healthy 6-year-old who loves animals, riding her scooter around the block, and hanging out with her big bro. "Hannah lights up every room she walks into. She's emotionally in tune with all the humans and animals around her (and deeply deeply emotional herself)," the mom shared in a sappy birthday post on Instagram. Likewise, she also mentioned Hannah loves to laugh, sing, and dance, and is currently obsessed with The Greatest Showman.