Siblings — you’ve gotta love’em, right? At least, that’s what your mom says. From late-night ghost stories to tattling to your mom when you got home late from a date, chances are you’ve had plenty of reasons over the years to have a love/hate relationship with your siblings. Who else has lived the same history, knows the same family stories, shares the same inside jokes… and can push our buttons every.single.time?

Seventy-nine percent of people in the US have siblings. Started in 1997 and observed on April 10 every year, National Siblings Day is a celebration of our brothers and sisters.

While it doesn’t describe everyone, many people are impacted by their birth order. Oldest children tend to be reliable, cautious, and structured; middle children are often people-pleasers, peacemakers, and somewhat rebellious; and youngest children can be fun-loving, outgoing, and self-centered. But no matter their characteristics, siblings are our first friends, our first debate opponents, our longest-lasting relationships, and our most complex. Because they know us so well, it’s easy to feel comfortable in the relationship. But that also means that they know the soft spots of our emotions — and there are times when they give those spots a bit of a nudge.

Despite all of this, though, siblings are there for us when we need them, they provide us with a sense of continuity, and we love them. We should let them know that we recognize their importance in our lives.

Did you know about these famous siblings?

Randy and Dennis Quaid, actors

Alec, Billy, Stephen, and Daniel Baldwin, actors

Chad and Rob Lowe, actors

Jake Paltrow (Director) and Gwyneth Paltrow (actor)

Charlotte, Emily, and Anne Brontë, writers

Wilbur and Orville Wright, inventors

George and Ira Gershwin, composers

Venus and Serena Williams, tennis players

Steph and Seth Curry, basketball players

Dear Abby (Pauline Phillips) and Ask Ann Landers (Eppie Lederer), columnists

Prince William and Prince Harry, British royalty

Julia and Eric Roberts, actors

Greeting Card Universe National Siblings Day cards

Greeting Card Universe’s Siblings Day Pinterest Board