How to Stuff Your Bra
Stuffing your bra can give you a fuller silhouette, and all it takes are some simple materials. To stuff your bra with socks, first put a bra on that's a little bigger than your bust, which will give you room to add the socks. Once your bra is on, push your breasts up so they're toward the center of the cup to give you some cleavage. Then, fold your socks up and place them in the bottom of your cup. Use a thinner sock for less padding or a thicker sock for a more dramatic change. Another way to add to your bust is to put on a strapless bra with molded cups and padding, then put on a bra with straps, molded cups, and padding over it.
Put on your bra. You should choose a bra with some padding: this conceals the extra padding you add. It's advisable to also wear your top while you stuff so that you can make adjustments accordingly. Depending on how large you want to go, you may need to use a bra that is two to three cup sizes larger than you usually wear. Push your breasts up in the cups. Put your hand into the bra and gently cup your breast tissue, moving each breast up and towards the center. This creates the cleavage that your socks are going to hold up. Choose your socks. The sock thickness and size depends on how much you want to increase the appearance of your breasts. Use thick socks for maximum boost. This is great for parties or for dramatic cleavage. For a subtle boost, try using thin hosiery socks. This may be preferable for everyday use, formal occasions or slinky dresses that require just a bit more bust. Whatever thickness you choose, try to use soft socks to avoid chafing. Fold your socks. Again, how you fold may depend on the type of sock. A good rule of thumb is that the sock should be folded in on itself once. Fold the sock in half with the heel at the center. Tuck the toes into the top of the sock enough so that the fold is the right size to fit into the bottom of your bra cup. Adjust the fold so that it's flat. Insert one folded sock into each bra cup. The sock should nest in the bottom of the cup, where the bra already has padding. The heel should go into the lower corner towards your armpit. Check yourself in the mirror. Make sure that both sides are even. Adjust the position of the socks if necessary. Put on a strapless bra. It is best to use a bra with molded cups and padding. It is also possible to use strapped bra, if you don't have a strapless. Put on a bra with straps over the strapless. For maximum effect, this second bra should also have molded cups and padding. You may need to adjust the back closure a notch wider than usual to accommodate the bra underneath. Create an X-back for dramatic cleavage. Straps that cross in the back tend to pull the breasts together, creating more cleavage. You can convert your bra into an X-back by grasping the straps together behind your shoulder blades and lacing them through a paperclip or safety pin. Buy a pair of breast enhancers. Silicone and foam are common materials; one might be a better choice than the other, depending on your breast size and the shape you're after. Silicone inserts are easy to use, have a naturally squishy feel, and are particularly good for creating high, dramatic cleavage. Foam pads might be preferable for smaller cup sizes. Put on your bra. Use a padded bra to minimize any lines around the enhancement pad. Tape your pads to your bra for extra security. Add just one or two small pieces between your pad and bra to ensure everything stays in place. Use a double-sided tape specifically for fabrics - this tape can be removed safely with no harm done to sensitive materials. Adjust straps and back closure. You may find you need to loosen here and there to accommodate the added contents in your cup. Put on your bra. Using one with molded cups and padding helps hide your extra stuffing. Rip off a piece of tissue. It should be about twice the size of your bra cup. Fold the tissue in half. The folded piece should be about the size of your bra cup. If it's too large, pieces will stick out and give your secret away. Trim off a bit at the end. Put the square of tissue in your bra so that it fits inside the cup perfectly. Repeat this step on the other side. Use one piece of tissue per cup. If you add more, they're more likely to bunch up and ruin your silhouette. If you're not satisfied with the amount of boost, try thicker tissues or 3- or 4-ply toilet paper. Check yourself in a mirror and make sure you look symmetrical. If it looks uneven, go back to the beginning and repeat with a fresh tissue. Use tissues for emergency stuffing only. Tissues are not the material of choice, since they absorb and hold moisture from perspiration, losing their shape and making you uncomfortable. However, this method will work if you're in a bind. 
Put on your bra. Push your breasts up in the cups. Choose your socks. Fold your socks. Insert one folded sock into each bra cup. Check yourself in the mirror. Put on a strapless bra. Put on a bra with straps over the strapless. Create an X-back for dramatic cleavage. Buy a pair of breast enhancers. Put on your bra. Tape your pads to your bra for extra security. Adjust straps and back closure. Put on your bra. Rip off a piece of tissue. Fold the tissue in half. Put the square of tissue in your bra so that it fits inside the cup perfectly. Check yourself in a mirror and make sure you look symmetrical. Use tissues for emergency stuffing only. 