As much as they drive us nuts, we can't imagine our lives without them. Happy Siblings Day! When it comes to both romantic or brotherly love, celebrities often stick together. Because of that, a lot of the time we see our beloved singer or actor hanging out with other famous people. However, no one's closer than family, and they know it as well. Bored Panda has collected a list of famous celebrities' siblings who tend to keep away from their big brothers and little sisters' spotlight, celebrating the joyous occasion.

For example, did you know that Mary-Kate and Ashley Olsen have a sister named Elizabeth? Or that Brad Pitt has a little brother, Doug? Unlike their closest relatives, you probably wouldn't even recognize them if you passed them on the street. Continue scrolling to check out the images of celebrities and their sibling and upvote the most surprising ones!