yes, some girls don't feel the need for it
Some girls like to wear no bra and underwear because they like the freedom of not feeling restricted in tight fitting undergarments.
Some of them
Nickers, Bra's and really rude stuff
Some girls do wear a bra with a dress it all depends on what kind of dress it is. like if it is a strap less dress then don't but if there are some straps then usually you do.
You can stuff wich is what most girls do or wear a push up bra. Sometimes massaging in lotion to the breasts can help
No, not wearing a bra is nothing to be ashamed of. Every woman develops at different times, at different speeds, and to different degrees. Some girls develop breasts early and will need to wear a bra at a younger age. Some girls never develop breasts large enough to necessitate wearing a bra. Some women even choose to not wear bras! If you feel self-conscious about not wearing a bra (because of small breasts), you can wear a "training bra" or something with a small padded cup.
depends some are some arent and some shops only sell unpadded
Some girls might need padded bras, but if they are just getting breast a sports bra should be good.
Yes nooooooooooooooooooo
Most girls get bra's at the age of 11 or 12
either get gel inserts or get a sock stuff it full of loo paper and put in you're bra :)