I found bravissimo to be amazing because they specialise in D+ cups and even go down to very small band size, they have a massive variety of different shapes/ bra types. My favourite brands are Panache and Freya. The staff were very knowledgeable and helpful. If the size u need isn’t in stock u can get a free home delivery. I wasn’t impressed with marks and Spencer either I think because their stock is limited in size compared to bravissimo they tend to push sizes that are inaccurate to benefit their sales rather than what actually fits correctly.
So early on u want ssupport and comfort not something that just looks nice
Try not to go too crazy buying bras at ur first fitting as ur size is subject to change! Mine didn’t fortunately but I’ve read a lot of threads were people bought quite a few only for them not to fit a few weeks or months later.
My surgeon warned against wearing push up bras for the first 12 months as they can displace the implant but check with ur own surgeon. Good luck x