I think it's safe to say that what defines beauty in East Asia is pale skin, high-ish cheekbones, v-line jaw, big eyes, thick long hair, and slimness. There is not that much variation in the model, and that's why beautiful (or plastic-surgery altered) Asian women are often said to look alike. Every single member of the popular K-Pop band Girl's Generation fits this mould, and they are all considered extremely beautiful.
In the West, beauty is harder to define. There are different standards of beauty depending on ethnic group and niche that person belongs to. In high fashion, models are often pale and considered beautiful. On the beach, tan skin is desirable. Fitness is generally prized, but curves are more accepted. Hair can be beautiful in a rainbow of colours, or even the colours of the rainbow. Beyonce is beautiful. Karlie Kloss is beautiful. Incredibly different, but still as "beautiful".
I prefer the Asian standards of beauty because they are move achievable for me. I don't need eyelid surgery (lucky me), my hair is long, and I'm short and pretty slim. The Asian standards are much more easy to achieve because they are narrower and easier to define. In the West, because everything can pass as beautiful, it's harder to truly be defined as such.
Lady Gaga and Beyonce: totally different! Both fit and sexy, but that's about it for similarities.
Follow my blog with Bloglovin