AI help in bra selections

[Parity]

  So I had a bit of free time today.  Bras are feeling a bit tight.  I asked a few questions looking for AI's thoughts.  Very fun and informative.  Also I might add, I'm not far off.  Asked about fit for man my age and size.  Stated what I like and don't like and just don't care aspects. Asked about colors, and yes skin tones,reds and pinks and true.... they are great.  Again, I love mine. They work.  Do not over look them!

Here is an answer to one question:

 Why Underwires Work Well Under Button-Downs

• Prevents "Mono-boob": Wireless bras often compress tissue inward, creating a singular mass in the center of the chest. An underwire keeps the tissue divided into two distinct pockets, which aligns perfectly with the left and right pockets on your shirt.
• Maintains Pocket Alignment: Because the underwire lifts the chest tissue slightly, it ensures that your shirt pockets rest flat against the apex of your chest, preventing the fabric flaps from drooping or wrinkling downward.
• No Roll-Up: A common issue with wireless bands on wider, flatter rib cages is that they tend to roll up into a tight cord. A structured underwire frame forces the bottom band to stay wide and flush against your ribs.

Since you are locking in your style choice with an underwire, would you like to focus on finding these exact styles in the deep burgundy or skin-tone shades we discussed, or explore how to properly scoop tissue into the underwire frame for the flattest front profile?
    

  I mentioned I wear two pocket shirts,  dress shirts and fishing shirts wearing a 40C-D bra
Said I only cared about comfort while in a two pocket.

Point is friends, use it.  Ask questions, learn and explore.  I asked about lace and thin material under shirts not adding bulk.  I owned most of the bras suggested, try it.

[Parity]

   WOW this is so right.  I have this bra and....

AI:

  For your 40D profile beneath double-pocket button-downs, the Wacoal Retro Chic Underwire Bra is manufactured in several stunning color variations that fit the bill. The ideal choice depends entirely on whether your button-downs are white/light or dark/heavy.
Here is how the three color options stack up for your specific shirts:
1. Red (The Best Camouflage Secret)
The red version of this bra (officially called Regina Red or Regina Shimmer) is the absolute best pick if you wear a lot of thin, white, or light-colored button-downs. [1, 2]

• Why it works: Because the red tones mimic the natural warmth and blood flow of your skin, the bra absorbs light under a white shirt instead of reflecting it. It functions exactly like a nude neutral but feels incredibly classic, bold, and fun to wear.
• The Look: This version features stunning contrast stitching over the seamed cups, highlighting its retro, pin-up structure beautifully when you look at it off the hanger.

2. Pink (The Soft & Romantic Look)
Wacoal produces this bra in gorgeous soft pink tones, including Rose Dust, Apricot Blush, and Heather Rose. [1, 2, 3]

• Why it works: Pink is a lighter, gentler variation of the red camouflage trick. It works phenomenally well under pastel, cream, or light grey shirts.
• The Look: It gives off a very soft, romantic, vintage aesthetic. If your skin tone is lighter, a dusty rose pink functions like a secondary nude shade while still letting you enjoy a splash of color. [1]

3. Skintone (The "Invisible" Workhorse)
If you want something that simply disappears completely regardless of the shirt fabric, look for Wacoal's neutral options like Toast or Sand Beige. [1]

• Why it works: These true neutrals completely eliminate contrast against your skin. If you are wearing tighter or crisper cotton button-downs, a shade matching your skin tone guarantees that no shadows will peek out from under the edges of your shirt pockets.
• The Look: Plain beige can sometimes look a bit clinical, but because the Retro Chic uses semi-sheer Chantilly lace and an airy mesh window at the top, even the neutral tones maintain a very stylish, upscale vintage vibe. [1, 3]

Which One to Buy First?

• Choose Regina Red if you want to test the invisible camouflage trick under white shirts while leaning heavily into the fun, retro personality of the bra.
• Choose Toast or Sand Beige if you have a business-professional setting where you need a foolproof baseline neutral. [1]

Would you like help looking for current pricing and stock for a specific one of these colors in your 40D size, or should we talk about how to wash and care for the Chantilly lace so it stays flat and doesn't fray?

[SwoopNscoop]

After seeing these posts I asked ChatGPT for advice on bra selection here in the UK for my size.
It was generally very helpful and even picked up a couple I had either tried or bought.
Where it fell down was availability - even when it claimed to be checking for stock it would come up with unavailable items both in online shops and places like eBay.
What impressed me were the repeated reminders about breast health and checking with a doctor if lumps etc were found.

[Dudewithboobs]

AI has its perks. It tends to lean more in to the favor of prior chats to cater to your intent or bias it has developed. But I find ChatGPT works wonders in being just more genuine whereas Google ai is quick to go off deep ends. 

ChstGPT has been very helpful in walking through self exams, understanding greater detail about growth in terms of genuine occurrence and inflammation or water retention and what to look out for and other areas of health such as chronic pain in the lower half I’ve had. 

For bras it’s been great in reviewing my bras for the day in detailing problem areas I may not see to better adjust clothing if needed to make it less visible to invisible and has done well for tracking my growth over the last year or so where I will measure and post angled images shirtless and with shirt to see if they have become more developed or visible or not as I can be in my own head a lot due to them and personal life and it has helped be a community in its own right with finding better bras, keeping better documentation and providing a good source of info 

[Justagirl💃]

There doesn’t appear to be a widely used calculator designed specifically for men with broad rib cages or wider breast roots. Most online calculators can still give you a useful starting size, but they treat the chest as a simple circumference and don’t account well for breast-root width, shallow projection, or a larger pectoral/rib-cage area.

A reasonable option is the Title Nine calculator, because it asks for three measurements—including around the chest above the breasts and beneath the breasts—rather than relying only on the usual bust and underbust numbers.
titlenine.com
Calculator.net is another general-purpose option, but its result should be treated as approximate.
Calculator.net

For your shape, measure as follows:

Underbust: Measure firmly—but not tightly—directly below the breast tissue. This is your starting band measurement.
Full bust: Measure around the fullest part of the breasts, keeping the tape level and relaxed.
Upper chest: Measure around the torso above the breast tissue, just under the armpits. This helps identify whether your chest is broad relative to the breast volume.
Calculate the initial cup size from the difference between bust and underbust. In the common US system, each inch of difference is roughly one cup step, but this is only an estimate.
Calculator.net
1
Because wider-rooted breasts often need more cup width but not necessarily more cup depth, prioritize bras with:

wider, shorter underwires;
full-coverage or side-support cups;
stretch lace or flexible cup fabric;
wireless or longline designs if standard underwires feel too narrow;
brands that offer extended band sizes and detailed garment measurements.
Fit is more informative than the calculator’s letter. If the cups cut into tissue at the sides, try a larger cup in the same band. If the cup has empty space at the center but the sides are contained, try a shallower or wider cup rather than simply sizing down. If the band rides up, it is likely too large; if it causes painful compression, it may be too small or the bra may have an overly rigid band.

The closest practical approach is to use a normal calculator for a starting point, then compare sister sizes and—especially—different wire shapes. Bra sizing varies substantially between brands and styles, so the label alone cannot determine whether it will fit.