Why are some women so conceited after birth?

I was in the store and mind you it is really cold outside about 40 Degrees , anyway this girl is with her husband and adorable newborn , her man is wearing a sweater and beanie and jeans boots etc and her she's wearing a really thin blouse that is see through and shows off her stomach when she pulls her arms up ... as I'm in line behind her she's literally flipping her hair (causing her shirt to lift) and then she goes over to look at magazines and walks super slow and flips hair and flips hair pouts lips and then walks back sighs flips hair, don't get me wrong she lost the baby weight but why do you have to act so conceited! Like  ok we get it you had a baby like what a month ago and you snapped back. 🙄 good for you but save all that for your husband jeez he's not even looking at her cuz he's to busy tending to the baby. And it's to damn cold to be wearing a shirt like that good god lol!! I ain't throwing shade if that's what y'all thinking I'm a mom and a size 4 
I just don't like the way that lady was carrying herself 
#Done