God forbid someone wants to wear something they feel comfortable in.
Nobody is suggesting the OP wears something she is uncomfortable in. Just something that she feels comfortable in that also doesn't look like she couldn't be arsed to make a bit of effort.
If you read my post I actually just suggested a different colour of trousers and said the jacket and top were nice. But it does need a bit of tweaking to look dressy enough for a wedding. I think the idea of (non-black) cigarette pants is also lovely.
Your comment is typical of the MN attitude towards weddings. It's all about the guests and what they want out of the wedding and their comfort and their wants. It's possible to look comfortable at the same time as making an effort to look smart and appropriate.
FWIW I think the OP is very close to a really nice outfit and just needs to make a few adjustments. I just get really annoyed with the MN attitude that weddings are all about the guests and they can do what they like and make no effort all and expect to be waited on hand and foot for a £5 Argos voucher and an out of date fruit basket.