As Richard Thompson so eloquently put it:
"That's what they're there for,
That's what they're there for,
Who are we to ask the why or wherefor?"
But seriously, I find this a particularly ludicrous "controversy," especially in a nation that annually spends some shocking number of billions on pornography (too lazy to look up exact #s, but you get my drift). When a baby is hungry it needs to be fed; simple. A modicum of ordinary discretion should ensure that interfering busybodies with nothing better to bitch about won't be affronted by the sight of a breast in the performance of its natural function, as opposed to being squeezed out of a push-up bra for the purpose of, er, titillation!