Whether for ordinary people or celebrities, hairstyles can always change the temperament. The most important thing to choose a hairstyle is to match your own characteristics, maybe face shape, maybe skin color may also be the overall style, but the most applicable and most common, should be the length of the hair, choose the right length is extremely important, the inappropriate length will affect your visual experience. 
Do you know how to choose the right length of hair? should I choose long hair or short hair? I believe this is also a lot of girls' problem, If you don't know yet, take a look at this article, Our Hair Bundles Length Guide Article will help you select the perfect length to suit your needs. 
What Factors You Should Think About?
Once we begin to figure out what's ideal for your lifestyle, from there I look at texture, density, growth patterns, face shape, and even more factors to clarify what length will be best for you.
Texture:
If you were considering a short straight haircut, two bundles and a closure are more than sufficient. However, if you wanted an extremely thick straight hairstyle, you would need 3-4 bundles but if looking for a long straight perhaps shoulder length with extreme fullness an extra bundle would get the job done. 
Size Of Your Head:
Most head circumference is 21"- 24" inches.
Whether your head is bigger or smaller you'll need to adjust the number of bundles you purchase to accommodate that. 
Frontal Or Closure:
If you match your hair bundles with closure or frontal, they always come in several sizes the most common being 4 x 4,5x5,6x6 inches, any style you are considering will need to use a minimum of two bundles with your closure. 
Frontals will cover a large portion of your head you will generally only need 2 - 3 bundles depending on the style and length. 
The answer to this question varies based on the cut, hairstyle, length, and shape, and size of your head. 
Length:
All bundles weight approx. 100 grams.
The longer the length of your human hair bundle, the more hair you're going to need. wiggins suggests more than 3 bundles if using hair over 22" for a fuller look from root to tip. 
The length of your hair can really make or break your look. In the end, all of these factors and more go into deciding the best length for you. 
How to get a suitable length for me? 
Please note that while the length is consistent, it will appear to be longer or shorter depending on the height of the model in the chart and the varying length of the neck and torso. The same extensions on a taller person will look different than the same length on a petite figure. 
How to decide which combination of lengths to buy? 
If you want a very full look of similar lengths you should get most of your hair the same length. To get a layered look all the lengths can be different but should remain in ascending order, for example, 14; 16; and 18.
If you are buying longer than 22; we generally advise the fourth bundle of hair may be required.
This is an approximate guide, and it is better to have more hair than not enough. The leftover hair can always be used next time.
If you are unsure about what length to order, please contact us and we will be happy to advise you. It is always a good idea to order the hair a little longer if you are not sure, as it can be trimmed or stylized shorter.
General Guideline: We recommend staying within two inches of your natural hair for the most believable blend. 
Summary 
In a word, a shorter straight bundle of 12 inches will obviously have more hair than a longer weft of the 30-inch straight bundle of the same weight. 
So, a short hairstyle like a bob will take two hair bundles with lengths ranging from 8 inches to 14 inches, you will also need the same amount of hair bundles for a leave-out or a closure (where you add an extra patch of hair in the front to create a natural hairline). 
So by two bundles, we mean you can choose an 8 inch and a 12-inch, a 10-inch, and a 12-inch for your hair. The fact is regardless of your choice of length, you need just two bundles for a short style, a leave-out, or a closure. 
However, if you are going for longer-length hair bundles in the range of 14-inch to 22-inch, you will need three hair bundles to make the style pop. 
While choosing three hair bundles in the length of 12, 16, and 18 inches or 14, 16 and 18 inches will allow the desired style to pop and even give you some volume, you have to be very mindful when choosing lengths like 20, 22 and higher inches. 
This is because while you might get the desired style out of three hair bundles, it will lack in volume and your hair will look scanty. In other words, the longer (longer) the length of your hair bundles, the chances are you will need more than three bundles to achieve the same look a 16-inch, 18-inch, and 20-inch will give you.
Faq of Hair Length Choosing
Should your closure be shorter than your bundles? 
If you want a very full look of similar lengths you should get most of your hair the same length. To get a layered look all the lengths can be different but should remain in ascending order, for example, 14", 16", and 18". 
If you are buying longer than 22" we generally advise the fourth bundle of hair may be required. 
What length of cheap hair bundles should I get?
If you are getting 10-18 inches or 16 inches, 2 bundle deals with lace frontal will suffice. Hair length past 16 or 18 inches, I would suggest you getting 3 bundles, so from a 16 inch, 18 inches to about 22inch, 24inch, 3 bundles will suffice. 
A good rule of thumb is to never wear a weave that's more than 4 inches longer than your hair. 
Are 3 bundles of 26-inch hair enough?
Hair length past 14 or 18 inches, I would suggest you get 3 bundles, so from 20 inches, 22 inches to about 24 inches, 26 inches, 4 bundles will suffice. ... The BIGGEST tip is to always buy an extra bundle, nothing worst them not enough hair.
How many bundles do I need for 24 inches?
From 16 or 18 to about 20 to 24 inches, 3 bundles is good for you. For example, if you are doing a frontal, and you want your longest length to be 24 inches, then you can get a frontal and then 20, 22, and 24, which should suffice. Hair bundle past 24 inches, I would use 4 bundles.
How many bundles is enough for a full head?
Usually, 3 bundles with closure or 4 bundles with lace closure are enough to make a full head weave, shorter length hair bundles are thicker than longer hair. From the feedback from the Peruvian virgin hair users, with 12" or less, 2 bundles can be more than sufficient. 
Try New Hair Meet New You!
Want a new hairstyle? wiggins has various styles to choose from, different styles of different lengths and colors to meet your various needs, including headband wigs,13x4 lace front wigs, lace part wigs,u part wigs, and others. Here are some new trendy colored wigs for summer or vacation you can't miss. 
Above all, enjoy your new, fresh look. Show it off, have fun, and let your new hairstyle inspire you. Experiment with new makeup colors, maybe different outfits. You'll find that a new hairstyle can just be the beginning of a brand new you.