My Sibling's Perfect Life

So I have this older sister who’s basically got everything going for her. She gets straight A's, has a boyfriend who's the captain of the football team, and she just started volunteering at an animal shelter. It’s like, how does someone do all that AND still find time to nap? Today, while I was sulking about it all, I found out her grades aren’t as stellar as they seem, turns out she hasn’t been doing half her assignments. Is this normal sibling stuff or am I just a jealous dweeb? Advice needed.