My ex's tits changed their size, but not their form while nursing. It was no difference for us, that she was watched while they were bigger, it turned us on
And it was a great kick, that it always seemed to be accepted to flash during this time. Even if it is long gone and things were seen easyer then.
One summer we were on our hollidays with my sister and her husband. Of course she breastfeed few times a day and my sisters hubby often watched and saw her tits. But that was not the end.
One evening my wife and me took a bath with our son. When we were ready, I toweled myself and went into our room prepare him to sleep. My wife came out of the tub and noticed, that there was no fresh towel left. She asked my sister to bring her a new one. My sister, nomally the most jealous person I know, was busy cooking and sent her husband.
She was totally surprised seeing my brother in law coming in, but they both did as it was the most normal thing in the world. He reached her the towel and stayed more than a minute to watch her drying her body.
Can you imagine my feelings, sitting at the table with him that evening?