Should mothers be allowed to wear form fitting shirts if they have large breast?

If someone is a mother, should she still be able to wear form fitting shirts?

Here’s the thing- I am very slim and I have somewhat large breasts (not huge, I’m a 34dd)

My breasts are implants so I guess they are slightly out of proportion with my body, which means shirts never really fit correctly.

A size XS would fit me but then it’s tight on my boobs

A small is a bit tight on my boobs, but fits well

A size medium I sometimes wear but depending on the shirt, sometimes it slips from my shoulders (I have narrow shoulders) and sometimes the sleeves are too long. Sometimes it fits perfectly.

I was wearing a shirt today and my friend told me that I’m a mom and I shouldn’t be wearing the shirt I was wearing. It was just a plain long sleeve shirt. Did not show cleavage (although I do enjoy showing cleavage time to time lol)

I will continue wearing what I feel comfortable in lol