By Aazam
Blake Lively
She's expecting her fourth baby during an appearance at the 10th Annual Forbes Power Women's Summit on Thursday
Her kids are her first priority over everything," a source tells PEOPLE
She wants to be that old-fashioned kind of mom," the insider continues, "when the kids are out or sleeping that's when she makes time to do work stuff
She shared that it's important for her three daughters to "see that you don't have to choose one or the other
"I don't need them to choose to be a businesswoman or a mom
Lively went on to explain that because she's "so obsessed with my family," she tries to only take on projects that she can "really believe in
I want to create something that is missing and I love for my kids to see that across all areas