Why do some bras make my breasts look bigger but some make them look smaller

Okay, so like, bras are literally designed to do different things, and that's why they can make your boobs look bigger or smaller. It's all about how they're shaped and what kind of support they give.

Some bras are padded or push-up bras, and they have extra material or special shaping to give you more volume and lift. They're designed to make your breasts look fuller. Then there are minimizer bras, which are designed to make your breasts appear smaller or less prominent by redistributing the tissue. A lot of sports bras can also make your breasts look smaller because they compress them to keep them from moving around too much during activity.

It's totally normal for different bras to give you different looks. Finding the right bra for you depends on what you want it to do and what feels comfy. There are so many kinds out there, so don't worry if it takes a bit to find what you like!