I love the look of a high rise jean with a cropped sweater, but its a little risky for the office. Try wearing a tank under it - just tucked in to the front of your jeans and you can achieve the same look without risking the chance of showing too much skin.
Sweater: H&M, Tank: H&M, Jeans: American Eagle, Hi-Rise Jegging, Boots: Target, Merona Nancy Winter Boots