Through the Years12 Then-and-Now Photos of Famous Siblings

It’s National Siblings day — and there’s no better way to celebrate than by taking a look back at some A-list brothers and sisters!

From Prince William and Prince Harry to the Baldwin brothers, there’s plenty of famous siblings who’ve been in the spotlight for decades and still keep a strong bond with their family members.

Mark and Donnie Wahlberg

MORE: Who Is Brad Pitt’s Brother? Meet Doug Pitt!

Even though brothers Donnie and Mark Wahlberg each have their own successful careers, they still take the time to remember how far they’ve come. Donnie got emotional talking about his younger brother, Mark, during an interview on his wife Jenny McCarthy’s Sirius XM radio show last summer, People reported.

“Obviously we’re brothers and partners in business and our relationship is fine, but it’s different,” he said. “We’ve grown so far apart, just through work and career and things that are important.”

William Baldwin, Stephen Baldwin, Alec Baldwin and Daniel Baldwin.

MORE: Shiloh and More of Angelina Jolie’s Kids Look All Grown up in New Rare Photos

When it comes to the Baldwins, Alec reminisced about what it was like growing up as the oldest of his four brothers — 56-year-old Daniel, 54-year-old William, and 50-year-old Stephen. And The Boss Baby star revealed that he definitely took his role as a big brother seriously.

“I really was pretty clear about how I wanted things to be and how I didn’t want them to be,” the 58-year-old told USA Today. “My brothers were much more childlike. They would go out and play basketball for six hours all day. And I would go out and cut grass and I had a job making money. I was much more industrious.”

Click through the gallery to see then-and-now pics of your favorite celebrity siblings.