Specialty retailer of women's clothing, Christopher & Banks Corp, on Wednesday posted a solid fourth quarter and full year sales growth and reaffirmed its ambitious plans to open 100 new stores this year. The Minneapolis-based operator of nearly 450 stores said quarterly net profit rose to $10.5 million from $10.3m in the year-ago period on the back of a 15 per cent jump in net sales to $95.4m from $82.8m.