1) Minimize the multi colored piece in the look, by pairing it with simple neutral pieces. If you wear a blazer, go black or white and add black shoes and jewelry. Find the look above here.
2) Repeat a bit of one color in the purse or earring or keep it neutral.
3) Petites and Plus sizes may want to consider a monotone stripe (like the photo below). Find the look below here.
The plus size can wear this horizontal stripe, because the stripe drapes at the sides and pulls the eye down, slimming the figure. Petites can wear a stripe in a skirt if it is a maxi skirt, like the photo below. This look can be found here.