It's easy to measure the length of a straight wig, just get a soft measure tape, and then measure from the top of the wig to the end. But for wavy and curly hair, you should stretch the hair to get accurate measurement data.
No, their length looks different in appearance. As we said before, except for straight wigs, other hair textures should be stretched to measure the length. So when you place these three wigs in a natural state, you will find 28 inch straight wig is the longest, 28 inch body wave wig comes second, and 28 inch curly wig is the shortest. Check the wig length chart to see how long the 28 inch wig looks like in different textures.