Your sister is not more beautiful than you, she is more CONFIDENT than you.

I bet if you wanted, you could look exactly like her. Grow your hair, use a straightener, wear body-modifying underwear, use contacts, some contouring makeup, and whatever else you need to feel beautiful.

But, you say, that takes hours of time and effort that you’d rather spend on other things.

Yes, that’s how it works. Everyone is capable of conforming to society’s standards of beauty. It just depends on how much money, time, effort and discomfort you’re willing to put in.