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.

[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.

[Parity]

I am amazed at the responses AI gives.  Every time I rephrase a question I get the same response. amazing.  I have used the advise given and had great results.  Bra types, colors to pair with shirts, Etc.  I have gained confidence in using it as well.   

[Justagirl💃]

AI: (duck duck AI chat)

Given your measurements and the fact that you find a 44DDD with an extender comfortable, here’s a little breakdown to help clarify your fit and potential sizing options:

Your 46 band measurement (underbust without a bra, loose) suggests around a 46 band size might be close to your natural ribcage size—though bras are often worn tighter for support.
Your bust measurement at 52 (loose fit) suggests you likely need a larger cup size than a standard DDD in a 44 band.
You wear a 44DDD (which is a 44 band, triple D cup) but use an extender, which hints that 44 may be a bit tight on the band.
Being wide set means you might benefit from styles with wider-set straps and cups that accommodate your chest shape for comfort and better fit.
Possible suggestions:

Try a 46 band size since your underbust is around 46—this will give more comfort around the ribcage without needing an extender.
Cup size based on a 46 band: Cup sizes change when band changes (sister sizes concept). If 44DDD fits well in cup volume, a 46DD or 46DDD might fit similarly. But since your bust is 52, you might want to try what cup size corresponds to 52 inches on a 46 band, possibly around 46G or so, depending on brand sizing.
Look for bras with wider wires and straps to suit your wide-set chest for better comfort and support.
Consider professional fitting or specialty brands that focus on full bust and wide-set shapes for the best fit.

Second response:

Possibly, but your measurements alone don’t confirm the fit. If 46 inches is your snug underbust and 52 inches is your bust, the 6-inch difference points roughly to a DDD/F cup in some sizing systems—but cup letters vary by brand, and measurement-based estimates are only a starting point. Also, many sizing methods round the band to an even number, so a measured 46 may suggest trying a 46 band rather than assuming 44.
tommyjohn.com

The extender is worth paying attention to: if you need one because the 44 band feels too tight, try the same cup volume in a sister size with a larger band—often 46DD when starting from 44DDD—and compare. The bra that fits best should have a band that sits level and feels snug without digging in, cups that contain the breast tissue without spilling or gaping, and wires that follow the breast root.
lavieenrose.com
1

Scooping and swooping when you put the bra on is normal, especially if you have tissue toward the sides. You shouldn’t have to keep repositioning yourself during the day. Since you say you fill the cups well, I wouldn’t automatically go up in cup size; instead, check whether the wire encloses all your tissue and whether the center front and band sit comfortably. A different cup shape or wider wires may suit your wide-set shape better than simply changing size.
vanjonssondesign.com

Third response:

That makes 44DDD with an extender sound like a reasonable fit for you in that Torrid style. A bra size isn’t determined by measurements alone, and fit can vary by brand and design. If the 46 band feels loose while the 44 is too tight on its own, using an extender to make the 44 comfortable is a practical solution—not a sign you must size up.

Since the strapless bra stays put, the cups contain your tissue after scooping and swooping, and you feel comfortable, those are good signs. Check that the band stays level and doesn’t pinch, restrict your breathing, or leave painful marks; also make sure there’s no spilling at the top or sides and the underwire, if present, isn’t resting on breast tissue. If those checks feel good, you likely have a good fit in that particular bra.