To be sisters or brothers means you're stuck with each other forever. To a certain degree, it may sound like a tiring thing. But, surely, it's no big deal if your sibling is your best friend, too! Shared genetics plus shared interests? Simply put, you wouldn't have it any other way!
It's one thing to have a friend and another thing entirely to have your biological sib as one. You can spend all your time bickering and trolling. But when all is said and done, the magic works: you'll make ends meet and go back to loving each other unconditionally. Just as expected, there's no better BFF than your own blood. Allow the celebrities in our gallery above to prove it to you!
ALSO READ: In Focus: 6 Things Only Eldest Children Would Know
Photos from www.instagram.com/dylan.cole_sprouse, www.instagram.com/jonasbrothers, www.instagram.com/chrishemsworth, www.instagram.com/vousmevoyez, www.instagram.com/cathygonzaga, www.instagram.com/annecurtissmith, www.instagram.com/claudia, www.instagram.com/laurenreidabook, www.instagram.com/kendalljenner, www.instagram.com/thunderslighthouse