Swimsuits - Where to get them?

Hey guys -

I'm hoping you lovely ladies can help me out. I know there have been several posts about this recently (it's that time of year!) however each thread I've checked have been with people with smaller band sizes. I'm not gonna beat around the bush, I'm plus sized in clothing not just because of my boobs but because I'm also very much overweight.

My bra size is a 42/44H in UK sizing.

I'm looking for a two-piece (preferably a tankini.)

Bathing suits have been my dreaded enemy for a very long time, and I would love if someone had some suggestions for me on where to look because I am going on a cruise in April and want to have enough time to find one that will work for me.

Thank in advance, everyone! :)