Advice about dress for a wedding

[cherrypiesally]

I'm going to a wedding at wookey Hole Caves and don't know what to wear, I have been warned it can get chilly in the caves and sturdy shoes advised, ( I can find some shoes just for the ceremony), But what dress?
I'm 5ft7, size 14-16 and very curvey with a mum role of fat that I love to hide, large boobs and hips. I have good enough legs to show off.
I don't have a huge budget either, I've looked at kimono style dresses but haven't found one I like so far.
Help me please.

Have you looked at asos.com? Is it a summer wedding?

Any colour preferences/ones to avoid?

Wrap dress?
www.phase-eight.com/fcp/product/phase-eight/occasion-dresses/isabella-dress/203493000#dvt_pha184_2

How about looking at East?
I love their dresses and probably my figure is pretty much the same as yours!

Nude shift dress?
m.dorothyperkins.com/h5/product?productId=24129175

Thanks for the suggestions, love the Blue Phase Eight one but probably a bit over budget but may have to stretch it.
Have looked at asos but everyone I like is out of stock. The DP dress is lovely but I'm very pale so nude is probably not the best colour.
Off to look at the East website.

It's s June wedding, but gets very chilly in the caves.

I love blues, purples and similar.

Shift dress?
m.dorothyperkins.com/h5/product?productId=24029563

Kimono?
m.asos.com/mt/www.asos.com/asos/asos-kimono-plunge-midi-with-splits-dress/prod/pgeproduct.aspx?iid=6379137&clr=Navy&SearchQuery=Kimono+dress&pgesize=29&pge=0&totalstyles=29&gridsize=2&gridrow=3&gridcolumn=1