World's Most Beautiful

9 Celebrity Sisters You've Most Likely Fallen in Love with Through the Years

In honor of PEOPLE's World's Most Beautiful issue, we're rounding up the buzziest, most successful siblings around

GIGI & BELLA

It's only right to follow up Kendall and Kylie with their BFFs and fellow famous sisters, Gigi and Bella Hadid. Despite having hectic modeling schedules (the sisters have worked for Guess, Joe's Jeans and Maybelline, to name a handful of companies), the pair have made time to give back – specifically to organizations that are working to find a cure for Lyme Disease, an infectious disease that Bella, younger brother Anwar and mother Yolanda Foster all suffer from.