You need this top from Cos
www.cosstores.com/nl/Shop/Women/Tops/Crossover_A-line_top/46885-17575533.1#c-22755
It's so so so flattering and lovely and easy dress up or down and basically I'm living in it. It says dry clean only but I have cold washed it and it's fine.
I don't often post here but have been compelled to as this top is just so brilliant.