At two weeks I would definitely stay away from the bottles & formula. The recommended time is to wait 6 weeks before introducing a bottle to avoid nipple confusion. Formula at this early juncture, unfortunately can set you up for failure. It is also quite harsh on a bf baby's stomach.
I attended my brothers wedding while breastfeeding. I ordered a dress from motherwear.com but it just didn't fit the occasion but they do have some that may. What I ended up doing was wearing a dress that I could pull down and I wore a larger cardigan that I kept buttoned at the neck so it made sort of a drape and that covered basically anything anyone would have seen. A good way to check is to breastfeed in front of a mirror in what you are planing to wear and take a look and adjust what is needed. This way you will feel confident in BIP.
And a big congratulations on breastfeeding. You are giving your child an amazing start to life!!! Have a great time at the wedding.
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