Next, you should study the strategy carefully. It is necessary to study the strategy, study the psychology of women, and let her give up shopping spree on her own initiative. Determine which dress your girlfriend likes by her dress and eyes. After seeing the style and collocation of clothes, you should study her heart. Why did she buy this dress at this time? Is it because you are in a bad mood and relieve stress through shopping spree, or is it caused by inferiority? In fact, your girlfriend is more concerned about your attitude towards this matter. The most important thing is what you think of her. Not the clothes themselves! This requires you to observe carefully and take corresponding countermeasures in order to make your girlfriend give up the idea of crazy shopping. It won't work if you persuade her directly.
Will your girlfriend buy you something when she goes shopping? If so, there is another ultimate trick. If the clothes you buy are much more expensive than his, she will feel expensive, so you can calculate the economic account for him and let her know that the clothes she bought are actually expensive, so that she will not be constrained. This is also a problem for her to know, and she may reduce the number of shopping and the amount of money spent.
You two had better consult each other to solve the problem, instead of blindly persuading and educating, which is useless to a woman, but look at the problem from her standpoint, so as to solve the problem.