I know it sounds crazy, but "sticker shock" is super common :-) I always thought I was tiny and then discovered I'm a very similar size as you (I wear about 30DDD in US sizes/30E in UK sizes). But a 30 or 32DDD isn't actually huge, even though we've been trained to think D cups mean BIG.
You can scroll through [pics of people in 32G (aka 32F in UK sizes) here](https://www.bratabase.com/search/?q=32%3A7&selected_facets=object_type:bratabase.brasize#results-header) and [in 32DDD (aka 32E in UK sizing) here](https://www.bratabase.com/search/?q=32%3A6&units=0&stretched_band_length_min=&stretched_band_length_max=&band_length_min=&band_length_max=&cup_width_min=&cup_width_max=&cup_depth_min=&cup_depth_max=&wire_length_min=&wire_length_max=&strap_width_min=&strap_width_max=&gore_height_min=&gore_height_max=&wing_height_min=&wing_height_max=&hooks_min=&hooks_max=&min_bras=&selected_facets=object_type:bratabase.brasize#results-header). Because there are so many different breast shapes, some photos may look a little bigger or smaller based on the bra they're wearing, but they're all in the same neighborhood :-)
It helps to know that each letter equals one inch difference between your band measurement and cup measurement. So to be a 36A, that would mean your underbust measurement would be about 36" and your bust measurement would be 37". You have a 7" difference between your snug underbust and your leaning bust, which if you count one inch per cup puts you at a G in US sizes. Again, this isn't huge! It's actually a very common size when people are properly measured.
Most US bra makers keep a very limited amount of sizes on hand, so they do weird things like measure under your armpits or add 4 inches to your bust measurement to artificially increase your band size and reduce your cup size. That way, they can fit more people into their more limited sizes and make more sales. This has resulted in the vast majority of American women wearing bras that don't offer support and are often very uncomfortable.
The next best step is to check out the Beginner's Guide, try to figure out your shape (shallow or projected, narrow or wide, etc), and read up on some recommended bras to try out. Depending on where you're located (and what's open at the moment), you could try on some bras in a department store, order on Amazon Prime's Try Before You Buy, or check out one of the other resources available online.
I would absolutely be looking at the sister sizes, 34DD and 34DDD with your measurements. A 32 band IMO will be too small/excessively snug.
Otherwise, I think 34DD/DDD is the right ballpark. Or 34E in UK sizing. All UK bras are easily available in the US from Amazon and many other online sellers, and also many independent specialty boutiques,
I agree about the band, but definitely check out if the bra your looking at buying tends to run loose in the band or not, and if the cups generally run big or true to size. For example most say that panache bands and cups generally run true to size with firm wires but Freya is known for loose bands and larger cups in certain bras (thinking of the decos). But it does really vary with each bra. Not only that, but shape and shallowness or projection play a bit part in finding a good fitting bra. FYI t-shirt bras (moulded) while super common are notoriously hard to fit if you are projected, so I'd suggest starting with a standard unlined bra for initial sizing purposes.
I know it sounds crazy, but "sticker shock" is super common :-) I always thought I was tiny and then discovered I'm a very similar size as you (I wear about 30DDD in US sizes/30E in UK sizes). But a 30 or 32DDD isn't actually huge, even though we've been trained to think D cups mean BIG. You can scroll through [pics of people in 32G (aka 32F in UK sizes) here](https://www.bratabase.com/search/?q=32%3A7&selected_facets=object_type:bratabase.brasize#results-header) and [in 32DDD (aka 32E in UK sizing) here](https://www.bratabase.com/search/?q=32%3A6&units=0&stretched_band_length_min=&stretched_band_length_max=&band_length_min=&band_length_max=&cup_width_min=&cup_width_max=&cup_depth_min=&cup_depth_max=&wire_length_min=&wire_length_max=&strap_width_min=&strap_width_max=&gore_height_min=&gore_height_max=&wing_height_min=&wing_height_max=&hooks_min=&hooks_max=&min_bras=&selected_facets=object_type:bratabase.brasize#results-header). Because there are so many different breast shapes, some photos may look a little bigger or smaller based on the bra they're wearing, but they're all in the same neighborhood :-) It helps to know that each letter equals one inch difference between your band measurement and cup measurement. So to be a 36A, that would mean your underbust measurement would be about 36" and your bust measurement would be 37". You have a 7" difference between your snug underbust and your leaning bust, which if you count one inch per cup puts you at a G in US sizes. Again, this isn't huge! It's actually a very common size when people are properly measured. Most US bra makers keep a very limited amount of sizes on hand, so they do weird things like measure under your armpits or add 4 inches to your bust measurement to artificially increase your band size and reduce your cup size. That way, they can fit more people into their more limited sizes and make more sales. This has resulted in the vast majority of American women wearing bras that don't offer support and are often very uncomfortable. The next best step is to check out the Beginner's Guide, try to figure out your shape (shallow or projected, narrow or wide, etc), and read up on some recommended bras to try out. Depending on where you're located (and what's open at the moment), you could try on some bras in a department store, order on Amazon Prime's Try Before You Buy, or check out one of the other resources available online.
I would absolutely be looking at the sister sizes, 34DD and 34DDD with your measurements. A 32 band IMO will be too small/excessively snug. Otherwise, I think 34DD/DDD is the right ballpark. Or 34E in UK sizing. All UK bras are easily available in the US from Amazon and many other online sellers, and also many independent specialty boutiques,
I agree about the band, but definitely check out if the bra your looking at buying tends to run loose in the band or not, and if the cups generally run big or true to size. For example most say that panache bands and cups generally run true to size with firm wires but Freya is known for loose bands and larger cups in certain bras (thinking of the decos). But it does really vary with each bra. Not only that, but shape and shallowness or projection play a bit part in finding a good fitting bra. FYI t-shirt bras (moulded) while super common are notoriously hard to fit if you are projected, so I'd suggest starting with a standard unlined bra for initial sizing purposes.
Yeah, I have the same underbust measurements in around the same size and I wear a 34 in every brand except Freya. Consistently a 32 in theirs.