How To Treat Sagging Breasts?

Doctor, kindly give me the name of the appropriate type of bra used by a woman 9(for my wife aged about 31 years) for keeping her breasts tight and preventing the downward hanging condition of the breasts - I mean the breasts should be tight and erected. My wife uses 36 size bra. Kindly give such a name of bras which is available in Kolkata and also give telephone no. and address of the shop in Kolkata where I can purchase it.