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

ASHLEE & JESSICA

You know the saying: The sisters who go on double dates together stay close forever – and the same can be said for Ashlee and Jessica Simpson. Like many sisters, Ashlee and Jessica were complete opposites when it came to their musical sound; while Jessica conquered pop, Ashlee delved into an edgier sound. Today, the duo continue to work and make us 'aww' (every time) with their adorable family 'grams.