What to wear with this...?

[posey]

www.oliverbonas.com/fashion/brand/issi/issi_black_and_white_mona_dress.htm

It is quite sheer, more grey (less black and white) than it looks. Actually nicer in real life

I want to wear it to a lunch-time family "do" at a hotel. It is the Easter weekend, so end of April so should be a bit milder.

TIA!

nice dress
fitted blazer with opaque tights and shoe boots

Thank you.
I have a jacket similar to that so that's easy
Will go and have a look for shoes.