The human skeletal frame has a relatively small range. Because of the natural circumference of the lower ribs, in order to train the ribs permanently into a tapered shape, this usually requires a corseted waist size of 26" or smaller (unless you have a barrel chest).  In sizes larger than this, the corset is primarily hugging the soft tissues overtop instead of directly influencing the skeletal frame. For this reason, folks who wear a corseted waist of 28" or larger tend to wear conical silhouette corsets quite comfortably.

The body responds best to consistency. If you started with a round rib corset, it may feel easier to continue with round ribbed corsets (maybe even progressing to "rounder" and more cupped in silhouette).

Likewise if you started with a more tapered-rib corset, and you're already fairly confident that you have a flexible ribcage that readily gives way to pressure, you may find yourself gravitating towards more conical silhouettes (maybe even progressing to dramatically "geometric" ice-cream cone ribbed corsets).

If this is your very first corset, the Gemini may not be the corset for you because it is specifically designed to give a very dramatic, striking silhouette, designed for advanced waist reduction.

(However, this quiz is meant to be a conversation about silhouette, not necessarily waist reduction. If your body is naturally curvy (curvier than an hourglass) such that a Gemini might be the right beginner corset for you, go through the rest of the questions in this quiz to determine which silhouette might be better to start with.)

If you have claustrophobia or if you get anxious from waist restriction, the Gemini corset may not be the corset for you because it is specifically designed to be a very dramatic, striking silhouette, designed for advanced waist reduction.

However, this quiz is meant to be a conversation about silhouette, not necessarily waist reduction. If you have limited experience with corsets, any round rib style tends to be better for those who might have claustrophobia or anxiety around corseting. A round rib Gemini corset has the ability to place pressure primarily at the waistline, and little to no pressure on the ribs and hips, so it can feel more like a narrow training belt (while still looking stunning).

YMMV though, as some folks like the narrow band of pressure, while others find it unnerving and would much rather have the smooth gradient of pressure that comes with a conical rib.

As with all things that affect your psyche, it's very much subjective and up to individual preference.

Singing, public speaking, and other activities which require projecting the voice, usually requires diaphragmatic breathing and a large lung capacity. Since conical rib corsets can result in more shallow breathing, speakers and performers that depend on the strength of their voice may prefer a more round rib corset.

Brass instruments strengthen the diaphragm and costal muscles in a way that singing or most woodwind instruments don't. Blowing through a tiny aperture in order to create the "buzz" takes a lot of strength to overcome the resistance. Not only does this build up the muscles around your ribs (and more muscle tone can make your body more resistant to waist training) but also taking full, deep breaths over and over again for years during brass practice can cause your ribs to expand or flare permanently, creating a more barrel-shaped rib cage.

Woodwind instruments don't require as much diaphragmatic strength so they typically don't have as much resistant muscle, but they still require a large lung capacity.

Of course - if you don't use it, you lose it - if you quit playing the tuba after middle school, you will likely lose some of that muscle tone, but a flared rib can persist. If you no longer practice a brass or woodwind instrument and your goal is to make your ribs appear more narrow, a conical corset may help with this.

While all strenuous sports require deep breathing, competitive swimming is particularly demanding on core and back strength, as well as regulating your breathing. This goes for speed swimming as well as synchronized swimming, and even "mermaiding" and freediving (where a large lung capacity is advantageous to stay underwater for extended periods of time).

Not only does this build up the muscles around your ribs (and more muscle tone can make your body more resistant to waist training) but also taking full, deep breaths over and over again for years during swim practice can cause your ribs to expand or flare permanently, creating a more barrel-shaped rib cage.

If you no longer swim competitively and your goal is to train your larger ribs to be more narrow, a conical corset may help with this.

Both ballet and Pilates are activities designed to contract the core and "close" the ribs. They prioritize both lean strength and flexibility of the body's muscle groups. As conical rib corsets also "close" and taper the ribs, wearers who have previous experience with these activities may be at an advantage. Learning how to breathe with contracted ribs through sport, they may already naturally breathe in a way that's conducive to wearing corsets. And if they have sufficient flexibility in their oblique muscles, they might find it comfortable to wear corsets.

Those who dance professionally may not want to waist train strenuously or as a lifestyle, because wearing corsets for 23 hours a day, 6-7 days a week can atrophy core muscles and work against your dance training. However, those who dance moderately or casually can also lace moderately. It's common for corset wearers to be mistaken for dancers due to their good posture and subtle changes to their movement!

Different tissues and systems of the body have different levels of difficulty when it comes to waist training. Fat (adipose) tissue is the softest and compresses readily by corsets (although it also tends to bounce back easily, and so it's more difficult to see long-term results if you're compressing primarily adipose tissue).

Oblique muscles take time to first stretch and then 'mold' to the shape of a corset (can take many months), and bones take the longest time as it requires your costal joints to become more flexible, and for very advanced (lifestyle) corseters, there's even an element of bone remodeling over years!

If your main goal is long-term waist training to make your natural waist smaller (semi)permanently, then the conical rib will be more effective in achieving this.

If however your goal is for a temporary but dramatic-as-possible tightlaced silhouette, the round rib may be the better choice.

Most historical corsets have a tapered rib, from the very straight Elizabethan bodies, to the smoothly contoured Victorian corsets, and the even slightly more conical Edwardian S-curve corsets. The very conical silhouette of the straight-ribbed Gemini lends itself particularly well under 1940s and 1950s Dior New Look retro style clothing.

On the other hand, when corset enthusiasts speak of "anatomically patterned" corsets, they are typically talking about more round-ribbed and convex-hipped corsets which gently cup and support the rigid areas of the skeletal frame, while only compressing the soft areas of the body (the squishy waistline). If this is your preference, the round rib may be more to your liking.

This is another situation where YMMV, especially in the case of IBS where one can fluctuate between too slow and too fast transit times, and any number of irritants or food sensitivities can set one off.

However, it's worth mentioning that (anecdotally! Not done in any peer-reviewed study) the conical rib seems to be a more comfortable choice for people who are sensitive to tummy issues, while the "pinchy" waist restriction of a very cupped or pipestem corset can set off acid reflux or IBS issues for some.

Of course, ideally you should be in good health with regular digestion if you wish to pursue waist training at all.

All sorts of interesting things happen during pregnancy (especially third trimester). Most relevant among them: your body creates the hormone relaxin which loosens all the ligaments of your body. This is designed to widen the pelvis to allow passage of the baby during natural labor, but as the hormone doesn't discriminate and affects every joint in your body, it can also result in side effects like one's feet growing a shoe size - and flaring of the ribs (especially in someone with a short torso and/or large baby that pushes out on the ribs).

That's not to say that one can't wear a conical rib corset to train the ribs inward again, but it may take more work and more discomfort compared to someone who was never pregnant. And if you ever plan to have more kids, you can expect your ribs to flare right back out again, leading some to believe that training the ribs between pregnancies is a practice of futility. If this is you, you may be more comfortable with a round rib silhouette in the interrim.

This goes without saying - if you have any previous injuries to your ribs, this can cause rib sensitivity, an asymmetric rib cage, more rib rigidity (bone fractures can put you at marginally higher risk for refracture), and generally more discomfort and resistance to anything pushing down on your ribs, making for an unpleasant experience. If you've ever had an injury to your rib, whether it led to a broken rib or not, proceed with caution and even bring it up with your doctor before attempting to train your ribs.