i'm with Cailin - even now, being a big busted girl, i get little black heads - and i haven't had the "pleasure" of breast feeding yet - i find they mostly rear their ugly heads (LOL) during summer if i wear a bra that isn't too supportive/made of more synthetic material (so all the really pretty/girlie bras that DH loves!), or if i get too lazy to exfoliate for a few days.

Yay - the joys of having boobs!