One of the most obvious differences is the handle of the bag. Kelly bag has a single handle, while brikin has a double handle. If we carefully observe the materials of these two bags, Kelly bag will be made of stronger materials, and its appearance will be more dignified and steady (mainly because this bag is named after Princess Grace Kelly of Morocco), while brikin tends to be soft and casual, which is more suitable for daily life and leisure (Birkin was inspired by the French actress JaneBirkin, who was just a mother at that time), but the shapes of the two bags are very similar.
So it's hard to explain these two bags better. After all, everyone's preferences and circumstances determine the scope of application of different styles of bags. These two bags have become classics and are welcomed by domestic and foreign stars, which also shows that these two bags have their own uniqueness in shape design. Again, turnips and cabbages have their own tastes.