BMI measures about how healthy a person is. So, if a person has an eating problem, or is just simply underweight, we do not need to make them look super beautiful and make every girl be envious of the model's physique, atmosphere, and clothes she is in. BMI should be the way to go instead of measurements. Models should also be chosen by who is the most average sized person that most people can relate to.
Magazines should be able to promote healthy bodies instead of skinny bodies. Bigger bodies are fine if the people are healthy. Lana Del Rey has a beautiful body, but she isn't skinny. Health should be more important than looks and this is important for all children and parents to know.
Today, especially in America, we are dealing with two problems: helping women know they don't have to be 90 lbs. To be attractive while also lowering the obesity rate. Although more involved and technical, BMI measurement would be the most effective way to select the right people for the job without encouraging unhealthy eating habits.
Either way, you're being judged on your size. Just because a person is underweight by BMI standards does not mean they are unhealthy and/or manifest an eating disorder. Sure, there's a good portion of underweight models who have eating disorders and/or are unhealthy but not all.
Also, the modelling industry is very broad. You get catwalk models, magazine models, fitness models, plus size models and much much more. Fitness models tend to look slim but healthy. Catwalk models tend to look underweight. And plus size models tend to look curvy. So there is a degree of variation. However, more often than not, we are subject to the sight of slim models. I have no issue with models being slim, or any size for that matter. I understand that there has to be some criteria to make somebody worthy of being a model, just like with any occupation. You can't just have anybody doing it. In saying that, if the general public want to see even more variation of size in modelling, perhaps some modelling firms could consider? Who knows, in a few years time there may be more variation in model size. I know of a few companies, such as Supre, which do use models of a variety of sizes.
While the BMI provides a general overview of the health of an individual, there is a lot of room for error in this measurement. The BMI does not take muscle mass into account. Since muscle mass weighs more than body fat, a person with a lot of muscle could be considered obese on the BMI scale. It is important to focus on body fat percentage in order to create an "ideal image." Some of these measurements include skin calipers and bioelectric impedance (http://dailyburn.Com/life/health/how-to-measure-body-fat-percentage/). While every body fat measurement has cons, the use of multiple measurements can provide a better idea of a healthy body. This would allow the fashion industry to be able to portray a healthy image. Also, it is important to eliminate the use of photoshop in order to diminish inaccurate ideals.
While BMI measurements provide a general idea of a person's health, it is not a completely accurate measurement. Measuring a person's BMI does not take muscle mass into account. Since muscle weighs more than fat, someone could have a lot of muscle and be considered obese by the BMI scale. It would be more beneficial to focus on measuring body fat percentage, which can be done a variety of ways, some of which include skin calipers and bioelectrical impedance (http://dailyburn.Com/life/health/how-to-measure-body-fat-percentage/). Everything has cons, but the use of multiple body fat measures will create better measure of what being healthy looks like. This will create a better "ideal image" in the fashion industry. Also, it is important to not photoshop images in order to eliminate inaccessible ideals being put into the minds of the young generation.
There is a wide range of shapes that can fit into a particular BMI. Someone muscular and someone fat can both have the same BMI.
The measurements say more about health in the long run, but still aren't a good basis. The reason for using measurements is for the designer's specifications.
I think much more should be considered than the twiggy body type. However, BMI would essentially be taking a step backward.