Outfit for wedding

[goingmadinthecountry]

Please no terribly negative comments. Bought a dress already from Bombshell but it will be too hot in July so I'll wear it when dd1 gets her MSc .
Anyway, am size 18/20, 5'10" and don't want to feel I'm pulling down a dress that is too short all day. So I've bought
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I need a hat (have a large head so may need to be a hatinator - whoever decided that was a word) and shoes/wrap or shrug etc. What colour would you go for? I have brown hair/pale (ish) skin and am 53.

Whoops! Not that green colour, it's the blue version
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I'd pick out the coral/red colour (can't quite tell from the pic). It's pretty and a nice length : )

Thanks - it was the length I went for! Love coral.