Wedding outfit that I can breastfeed in?

[chickenfeet]

Help needed please!
I'm going to a wedding in March and have absolutely nothing to wear that is appropriate and can give quick access for my 13 week old to breastfeed.
I'm looking for a skirt & top combo but can find nothing in the shops. I don't want anything too "weddingy" as it's a registry office do and also I'd like to get some wear out of it again.
I'm size 10 on top with huge norks and 12 on bottom.
Any ideas?

try

www.mummylooksfab.co.uk/Breastfeeding-tunics--and--dresses

I wore a strapless cocktail dress when DS was 5 months old (to my own wedding) - also registry do and not at all wedding-y and have re-worn it plenty since. You need a pashima or something to cover up while actual feeding (cos of the style of the top) but it worked perfectly for me. And flattering too.

Or a shirt-dress/dress with a button-through top - loads in the shops at the moment for spring. I bf DS for 12 months and DD for 12 months and never wore any proper 'breastfeeding' clothes - they are a bit of a con really when all you need are buttons or a vest under whatever you're wearing so you can hoick your top up without exposing acres of belly!

The only thing you might need to bear in mind if you went down the strapless route is the bra - needs not to dig in too much. I think I got mine from the 'teenage' section in M&S - the bras in that section aren't underwired and are pretty cheap (compared to the identical non-wired ones they flog for maternity/breastfeeding, which cost about three times as much).