Because of my bust size (I am a DD or DDD depending on the bra), it does give the illusion my waist is smaller, even though I am an apple shape, depending on the top. I prefer the more supportive underwire bras, which in itself can define and shape the bust into a more feminine look, depending on the style of the bra. A very form fitting top with darts in the bust gives me a very feminine, curvy look. While very comfortable to wear because everything fits in all the right places, it is too much of a feminine flattering look for me so I have to find tops that soften the curves, a trick I have learned women frequently use when not wanting to put their bust on display. Pay close attention to the type of tops women wear and you will see that the breasts are not always well defined and are difficult to determine shape and size. Those types are ones to look to see if they can be made to work.
While I don't mind wearing a very fitted top around the house in private (and frequently I do for the comfort), in public, I stick to more masculine styles, more non-fitted styles so I don't get a mono boob look where the material doesn't get stretched and molded over and around the bust, or buttons running down the front are sucked into the cleavage defining each beast because I am wide set and defining the bust as a whole, in an feminine way, due to the gore tacking on my sternum defining each breast as underwires do, but it also gives extra material in the waist so I have to find a happy medium between curves and sloppy look. While I can't completely hide my bust because of my size, and it took years for me to come to terms with that one fact, and by the shear nature of how underwire bras work, there is an appearance cost for that exoskeleton extra support, you have to do some matching of bra to top to get the look you are going for, in my case, support without drawing undue attention to my chest. But women do this all the time to draw attention to their bust or to divert attention away from their bust.
While I suspect you are looking more for specific types of tops, I have found that every body is different and what works for me may not work for you. As women have found out, when it comes to dressing the breasts, it is a trial and error kind of thing. Lose fitting tops through the bust while not making your waist look sloppy is the key. Sometimes that will be a button down top, other times a polo top and other times a vest or jacket of some type. I wear all of these.