Jacket or similar for a wedding..?

[Perissa]

I am going to a wedding in 10 days and wearing the dress linked below with blue court shoes and a large yellow clutch bag.

www.boohoo.com/restofworld/new-in/bay-tropical-print-sweetheart-midi-bodycon-dress/invt/azz03661

I need something to wear over the top when I get chilly as I always do. We are going to the whole day and I will be breastfeeding 4mo DS throughout the day so needs to be comfy

I have absolutely no idea where to even start with looking and no idea what might work. Have attached pic of dress. Can anyone help so I don't end up with my old maternity parka

Does it have to be a jacket? Have you thought about a nice pashmina in either blue or yellow? Could be nice for breastfeeding as you could quite easily drape it round the front as a cover :)

Absolutely doesn't have to be a jacket, pashmina could work as long as it is warm enough think I'm cold blooded , I could try and find a thicker one.

Also, does anyone have any suggestions for a necklace of some kind that would work with it. I can't wear earrings and will hopefully have my hair up.