I am a girl. . How to go shopping with my sister-in-law without embarrassment? Natural point

Talk about your brother casually, then ask her if she likes it when she sees something delicious, and then we can discuss what's delicious and interesting in this street. When you see beautiful clothes, you can also discuss them with her or put them on for her to see. In fact, it's good to be your own good sister, ignoring some stumbling psychology, and everyone of the same age will soon play together. That's what I do. I have just been there once, and my sister-in-law and I will contact each other and come out to play or something.