Well you seem to have the Western European body type which gains weight on the boobs. It’s an Italian brand and us South European women (generally) tend to have a bigger butt and modest breasts.
I don’t know if you will get the support you need from intimissimi bras but their thongs are perfect for my butt as my booty tends to dwarf out thongs from other brands. It’s VERY flattering for my body type, which is bottom heavy with smaller boobs, whenever I wear my sets from intimissimi I get lots of compliments. So it may not work for you because you seem to have a different body shape. But you can always go there and try their bras to see for yourself!
I have wide hips compared to my waist as well and they fit perfectly. I also happen to have a natural thigh gap, thus I need something with more coverage of the crotch. Their designs deliver what I need.
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I can say intimissimi works for G and T. (I am very T with a little bit of G)