my sister's annoying secrets

i swear my sis thinks she’s got all the best stuff figured out. like why do i need to know her latest skincare routine when she won’t share any of the good snacks with me? so yeah, i kinda went through her phone and found a bunch of pics she shouldn’t be keeping on there if you catch my drift lol. am i the worst little sister ever or is this just sibling stuff? what would u do?