I think part of the issue OP is you’re looking for quick wins. I totally get this in today’s busy world. Non - iron shirts rarely exist and again, it’s a short cut, if you want the crisp shirt look, you’re going to have to iron.
And if you want your top half to look slimmer, there are absolutely better outfits to wear (as others have suggested) but ultimately you’re always going to have the boobs and belly you have - there’s no way of avoiding that. Changing your diet and lifestyle will eventually reproportion you but I get that’s not the objective here.
I personally think the most attractive body shape, and easiest to dress, is hourglass - well proportioned whatever size always looks great. A size 16 hourglass usually looks better than a size 10 apple for example. Therefore, your aim isn’t to show off slim legs despite a big bust and waist as that’s going to send your body shape off - you need to view your body as a whole and not individual parts.
As another poster said, I think you should try a knee or just about the knee length A line skirt. With a slim V neck blouse and pretty undone cardigan or casual blazer or jacket.
V necks because it breaks up your chest area so it doesn’t look like one big visual chunk (people with small busts can get away with round neck but larger busts need V neck). Slim fitting so that when your cardigan is falling over the top, your top is faking a smaller waist.
But there’s only so much fashion can do. I have a smaller apple shaped body and it’s a nightmare to dress. The only real way of making it easy to look good is to shift the tummy weight (which im currently working on as I’ve had enough of it!).