When wearing a suit, beware of what's underneath.
The type of top you are wearing is important because it has an effect on how the suit looks overall, and will have to carry the outfit should you take your suit jacket off. Short-sleeved, silk or knit shells look great on full-figures and do not cling to your hotspots in an unflattering way. Long-sleeves are also a good option, but only in cooler weather. Your top should not be too tight or low cut; the style should fall within the overall parameters of your office dress code.