I had to find a replacement when my favourite bra was discontinued. I was quite fortunate that it was a quiet shopping day and there was a bra fitter on hand the day I went to the department store. This lead to my first bra fitting (and yes, I was wearing the wrong size).
The kind woman helped me find my new favourite bra, but also suggested that I invest in a 'bra wardrobe' claiming that different styles of bras worked better under different styles of clothing.
My favourite low profile unlined Wonderbra is fine under structured garments and layers, but not so good under sweaters and t-shirts, for which I now have a couple of moulded Calvin Klein numbers. For low cut necklines, there is a spiffy little Triumph balconet style.
There is also the ubiquitous compression garment for running and workouts!
The decision which bra to wear is now as much a part of my dressing ritual as which shoes to wear.
How many, and what styles of bra do you own?