An "ideal beauty" is what a particular society or culture has defined as the features that will make you beautiful.
Those features that are admired in a particular culture because according to that culture it what makes a person beautiful. Some cultures will consider slim,tall or hour glass body as an ideal beauty , some cultures consider full figure as ideal beauty , some it is six pack and tall etc but it varies from culture to culture however it sometimes create issues especially for the young people ; who tend to believe they need to live up to that ideal beauty.
Eating disorders may result as people try to keep up with the the "ideal beauty features", such as people who go through bulimia nervosa or anorexia nervosa just because they believe they will only be beautiful if they look a certain way.
Ideal beauty is usually advertised on TV , where certain bodies seems to be more dominant as compared to others even when it comes to fashion shows. This affect a lot of people as they try to accomplish that type of ideal beauty.
The feminine beauty ideal is "the socially constructed notion that physical attractiveness is one of women's most important assets, and something all women should strive to achieve and maintain". Feminine beauty ideals are rooted in heteronormative beliefs, and heavily influence women of all sexual orientations.