Ah siblings. The cause, and solution to the many tumbles and triumphs to occur over the course of our lives.
Whether it's their friendly competition pushing you to one-up them, their merciless teasing toughening you up for life's challenges, or simply their unconditional love - no matter how many times you steal their clothes or blame those dirty dishes on them - there's no one quite like our siblings.
For our favourite A-list celebs and their families, its no different - only, they have a slightly bigger audience when it comes to exposing the good and the bad of family life.
On April 10, National Siblings Day posed the perfect opportunity for celebrities to shine a light on their relationships with their brothers and sisters, and boy were we glad they did.
From US celebrity royalty like Michelle Obama, Kate Hudson and Ryan Seacrest, to actual British royalty like Fergie and Eugenie - there was a plethora of pure gold for the eyeballs to enjoy as celebrities took to social media to share their tributes.
We've rounded up the very best below - keep scrolling for some good old-fashioned sibling love, throwbacks a-plenty and some jaw-dropping revelations too - these celebs have some interesting backgrounds!
WATCH: Chris Hemsworth talks about sibling rivalry with his brothers. Gallery begins after video...
1 / 0
2 / 0
3 / 0
4 / 0
5 / 0
6 / 0
7 / 0
8 / 0
9 / 0
10 / 0
11 / 0
12 / 0
13 / 0