Silicon Breast Forms Part 1: Introduction and Basics.

This was originally going to be one article but it was so long I divided it into three parts. This is the introduction, where I talk about the basics of breast forms. If you've never worn one, I suggest you read this. The second part will be a review of current breast form technology. And the third will be about how to repair a breast form that has been damaged.

It seems to me if you want to be a sissy, you need breasts. There are dozens of ways to get them. You can make them out of socks or water balloons. You can draw them on (and I have seen that done very convincingly). If you have enough breast or fatty tissue, you can use tape or buy things that turn that into some kind of cleavage.

Speaking for myself, I am only interested in silicon breast forms. In my opinion, these give the most realistic look and feel. I have been happy enough with what I own, but I am not 100% satisfied. So while I shop around and see if I can find something better, I thought I would share my experience with you. I hope you find it helpful.

Silicon breast forms can be expensive. My current pair set me back about $100 and this would be considered low cost. After living with them for a couple of years, here is what I would want from new ones:

  1. Would love more realism in look and shape. Especially color.
  2. Would love to be able to wear any bra, not just a pocket bra.
  3. Would love to be able to go bra-less, or with minimal support.
  4. Want them to be durable.

Breast Form Basics

It's best to start with the bra. Even if you want to go bra-less, this will help you understand how body shape and breast size interact.

Sizing the bra.

There are two parts to the sizing. There is the band size, which is basically a measure of how large your chest is. You obviously need that for your bra to fit, but it also affects how the breast form will look. Then there is the cup size, which is how big the breast is that fits in the bra.

Measuring your band size.

To measure your band size, take a tape measure, fit it around your chest where the bottom of a bra would naturally land (5-7.6 cm/2-3 inches) and note the measurement. Keep the tape level, and don't make it too tight. If you see folds of skin over the tape measure, you are definitely making it too tight. Write down that number.

Now what your mother (or your father, if he wore bras) would do now is to take this number, and if it is odd, add five. If it is even, add four. This is called the "+4 rule" and generations of bra wearers have sized bras using it. But today, the entire bra wearing world is in an uproar about the +4 rule. You would think that by now we could agree on how to size a bra, but nope. The argument is that the stuff they made bras out of in Mom's and Dad's day isn't as flexible and space-agey as the stuff they use today. So we don't need this old +4 stuff anymore.

Reading about this on the web and asking my genetic female friends about it has only added to my confusion. Many have found true bra happiness for the first time in their life by avoiding the +4 rule. At least as many women have ignored the +4 rule and found that their new bra doesn't fit. Perhaps the most shocking thing is that world leaders continue to ignore this bra crisis and instead muddle around about climate change, oil prices and nuclear weapons. They don't seem to care that the entire bra wearing world is in an uproar. No wonder the world is in such a mess.

There seems to be a slowly growing consensus that size has something to do with it. There's a compromise to the +4 rule that works like this: If your band size is under 36 inches, follow the +4 rule (add 4 if it's even, add 5 if it's odd). If your band size is more than 36 inches, add 2 if even, three if not. Some people go even further and say if your band size is over 40, use your exact measurements if even, and just round up if odd.

My own thought on this is that I have three bras that I bought with the +4 rule, and I can't say I am thrilled with the fit. I have a 44 chest, so I bought 48 band size bras. Going forward, I think I'll try something a little smaller.

Measuring your cup size

The next step is easier. If you were a genetic girl, you would now measure around the fullest part of your bust and subtract the band size from this. In other words, the cup size is just how far the breast projects beyond your chest. If we were genetic girls I'd have some comments on the stupidity of this measurement method. But since we are not, I'll spare you those. And, since we're not genetic girls, we get to pick our sizes! Here's how breast projection maps to cup size:

Breast Projection Cup Size
1 inch A
2 inches B
3 inches C
4 inches D
5 inches E or DD
6 inches F or DDD
7 inches G

These are American measurements, which are pretty standard up to the D size. If you are one of my European or Japanese readers, I refer you to for conversion tables.

Choosing Your Cup Size

Let's start with those who want to look like normal girls. That is not me, but it's a good place to start. If you want to look "typical" and not attract attention, you should probably not go larger than a "C" cup. If you are smaller than 5' 11" and slender (170 lbs or less) then a "B" cup might be a better idea. If you are like me and your only interest is to be a fantasy creation of Dom de Luxury's, then go for the cup size that makes that happen for you.

At this point, it's important to realize that your body type will affect the appearance of the breast forms. For example, a woman with a band size of 32 might appear to have a DD cup. Take that same breast and attach it to someone with a band size of 38, and it will look like a B cup. There seems to be general agreement that for a given size of breast form, each two-inch increase in band size will drop the cup size by a letter. For example, a breast form that looks like a DD on a 38-inch band size (38DD) will look like a D on a 40-inch band, a C on a 42-inch band and so on. If you've never worn breast forms, and don't have a place you can go try them on, my advice to you is to buy or borrow a cheap bra in a certain cup size, stuff it with socks and cover it with a t-shirt. Take a look in a mirror and see if you want more or less.

When you shop for a breast form, you should see a chart like this for every product: Aphrodite breast form fitting chart This particular one is for the Aphrodite breast forms. We'll talk more about them in part 2. Here's how to use the chart: Say you have a band size of 38 and you want to look like you have a cup size of DD. The intersection of the DD row with the 38 column gives you a manufacturers breast form size of LG. That's the recommended size for you to get the appearance of a DD cup with your band size. Some of the entries have a '*'. Those mean that you might want to move up a size to get the look you want. For example, 44 DD shows up as LG*. If you have a lot of breast fat or tissue, you would probably be fine with an LG. If you are heavier in your stomach or have really broad shoulders, then you should consider moving to an XL.

Types of Silicon Breast Forms

You can buy individual breast forms or plates. Plates are what they sound like: chest plates which attach around your neck and sometimes also your back. Individual forms are what they sound like: single breasts.

The vast majority of silicon breast forms are basically a plastic bag into which liquid silicon has been forced. The bag is then sealed. The quality of the silicon (and its color), as well as the strength of the bag, are the main factors in the cost of the breast form. The plastic bag is a classic point of failure.

As for shapes there are basically four: oval, triangle, teardrop and asymmetrical. The asymmetrical category is considered the most realistic and the most expensive breast forms usually fall into this category. There is definitely a "right breast" and a "left breast", they are not interchangeable (which is why they are called asymmetric). They are usually shaped like an oval with a tip that narrows on just one side. The narrower tip is tilted diagonally toward the shoulder. These do look realistic and if you have broad shoulders they will help make them look smaller and more feminine.

There's not much to say about the other shapes. Pick the one you like the most. Triangle shapes tend to mimic a woman's breast with added droop. They often exaggerate the protrusion and so can look a bit larger than other breast forms of the same size but different shapes. Teardrops are oval shapes with a pronounced tail. Oval shapes are for "nice girls". They fill out the bra but don't call much attention to themselves.

The back (the portion that attaches to the chest) can also have different shapes. Particularly in the teardrop category, you find breast forms with concave backs. These are intended for people with more breast tissue so the fit is better.

Wearing Breast Forms

The easiest way to wear breast forms is with a pocket bra. These bras have actual cloth "pockets" that you insert the breast form into. In my experience, breast forms in standard bras tend to shift and slide around. To keep them stable, you need to attach them to your chest with adhesive. My experiences using adhesives with breast forms has been terrible. Silicon breast forms are liquid silicon wrapped in what is basically a plastic bag. The plastic is quite thin and the seams are very delicate. Gluing the breasts to my chest worked until it came time to remove them. Despite the use of copious amounts of solvent, the plastic stayed glued to my skin and separated from the breast form. If you have smaller, lighter forms, or more expensive ones, then you might have better luck than I did. For now, I am avoiding adhesives and sticking with pocket bras.

I prefer to put on the bra, then insert the breasts into the pockets. It's certainly possible to do it the other way around. Oval, teardrop and asymmetrical shapes have a narrower side which should point towards the underarm. The triangular shaped breast forms should have the longest side (the "base" of the triangle) along the bottom of the bra cup.

I have read that underwire bras can be used in a similar manner to the pocket bras, but I have never found an underwire bra for a 44DD size breast form. If you try this, let me know how it works.

Breast forms are delicate, and you need to exercise some care. Store them in their original boxes, and treat them gently. It is also universally recommended that you do not sleep in them. I have to admit I always do that, by command of my Dom, and have had no problems with them from that. But if you toss and turn wildly when you sleep, or sleep on your stomach, I can easily imagine you damaging the forms.

Thanks for reading and if you have something nice to say or a good idea or suggestion, you can always