I think black and white together is fine, but it is a bold contrast so only a look to wear if you want to stand out a bit. If you want to keep to a neutral palette then try wearing it with grey or blue, or possibly nude shades.
White cardigans do seem hard to pull off though, I have a long draped one and I rarely know what to wear it with.
I agree with splashofcolour, try a nude coloured tank top instead of the black tank. I think it’d go well with the monochrome.posted over 6 years ago