Nursing tops for breastfeeding mothers.Save on Nursing Tanks!

Too small nursing tank?

A friend of mine sent me 4 really awesome almost new nursing tank (a cami type thing).
They seem to be a bit small. I prefer form fitting things, and they dont HURT. The only issue is the top cuts into my breasts. I worry when I start nursing, can this hurt my supply?

I hate to have them go to waste, but dont want to sell them.

Will it hurt anything to wear a (possibly) too small nursing cami?