Perfection.
I'm not a huge fan of ScarJo, but this is pretty much the perfect outfit. What's so great about wearing leggings and your boyfriend's shitty button-down? Everything, really. First of all, she's not wearing "maternity clothes." The shoes are Robyn-esque and amazing. The sunglasses are great and so is the classic Coach bag. She's shoving ice cream in her face, probably at 10:30 in the morning, as one does. Also, I appreciate that she got a Mom haircut BEFORE becoming a mom, therefore making it cool and preempting anyone who accuses her afterwards of getting one because of the baby.
Because of this photo, I have been searching everywhere for the perfect blue button-down. Which I know completely defeats the point, which is that you should just grab your man's shirt off the floor. But still.
BEWARE: leggings rule during pregnancy, but they can be abused. In this case, they are acceptable because they are paired with a billow-y top and platform sneakers. DON'T start wearing them every day with other tight things, like those ruched tank tops that make you look more like a sausage than you already do. When you do wear them, pair them with heels or sneakers that highlight your little stick legs. Basically, if you are going to wear them, replicate this outfit. Comparable examples/links below (for good black maternity leggings, try Target).
As a side note, her boyfriend looks like a total douche.