Are these supportive (for bigger boobs) ?

Hi ladies.

I have pretty big boobs.. We're getting married soon and I would like to wear a strapless dress (don't have a dress yet).

I actually have only found one strapless bra that could support my size boobs (34JJ)

I am still debating on whether I want that..

I was wondering if something like this would/could actually be supportive to (my) boobs or not?

I've never tried a type of corset like this so I don't know. I feel like it looks more trustworthy to stay in place or something.. But I'm not sure if it could somehow replace a bra?

The front has hooks but the back has a lace to pull and tie.