There are so many different clothing items that could be considered ‘tunics’, so it’s hard to write the exact definition! Essentially, the tunic is between the top and the dress, although everyone’s definition is slightly different. The loose and loose upper part that reaches the top of the thigh is the tunic, though sometimes tight clothing, or clothing of different lengths, is also described as a tunic. With this wide reach, it is not surprising that some women are not sure which kind of tunic is best for them!
Leggings have been fashionable for quite a while now, and will not seem to disappear from the fashion world anytime soon. They are popular for the beautifully sleek silhouettes they create, but probably the most important for how comfortable they are. With these two things in mind, it’s easy to see why the tunic is so good to wear with leggings. They are just the right length to show off a nice shape that leggings give your feet, without being too short so everyone can see too much! They are also very comfortable, so wearing a tunic with leggings is one of the nicest clothes you can wear. Leggings are not pants, so not good to wear with short tops, but thicker than tights, so sometimes too big for a dress. Tunic is the perfect compromise.
Below is a reference for tunic and legging usage