It was nearly the same here. She went from small A's to normal B-cups and was happy about this.
I often wondered that none of the girls was jealous, when their guys stared at her tits. It seems that motherhood was something that excluded sex for them.
The guys had another opinion. They stared and, sometimes, also tried to touch when she asked them to take the baby and give it back to her.
Her thrill was to see that her behavior made the horny and that they tried to conceal this. And my thrill was to hear all these detailed descriptions when I came home from work.