One tip for saving a big portion of your shopping funds (so that you can buy more with less money) is to go treasure hunting in the children section.
If you are one of those lucky Size S girls, you can often find plenty of options in the children section for half the price of their adult equivalents. For example, you can get the classic Burberry trench coat at their Children store for as low as HK$4,100, when the almost-identical version in the Ladies store cost HK$8,500 (more than double!).
Or if you are in Europe and come across the Moncler Junior line, then you must pick up one of their signature down jackets for only £476 (approx. HK$6,000).
Here is a size guide to some of Miss Curator's favourite children lines for your reference:
Burberry - Age 14: height 164cm, chest 82.5cm, waist 67cm
Gap Kids - XXL: height 160cm, waist 68cm
H&M - Age 13-14: height 65" (i.e.165cm), chest 82cm, waist 67/69.5cm
Moncler - Age 14: height 64.6" (i.e. 164cm)
Zara - XL: height 164cm, chest 82cm, waist 69cm