Love it when a massively pregnant woman doesn't even try to choose clothes that cover her swollen bump. Even hotter still when it seems like they choose clothes specifically BECAUSE they are fat too small for their growing figure. This top would have barely reached down to her waistband before she got knocked up, but now there's no chance at all. The slight wrinkles suggest you could tug it down and stretch it until it just about reaches her engorged bellybutton...but as soon as you let go it would ping right back up to the top.
She loves that you look at it. She knows that you like it.