Let’s be real, we’re fascinated by twins. There’s something enigmatic about two people born basically at the same time (although every twin will be like, “I’m two minutes older,” blah blah, we get it twins!), who have shared a womb together and often have an extraordinary sibling bond and an uncanny sixth sense between one other.

This fascination doubles down when we learn a celebrity is part of a twin, they suddenly become more interesting. Why? Because they’re famous and there’s basically two of them, how cool is that?

Fraternal twins, which are babies developed from separate eggs and are fertilized on their own a.k.a. they don’t look alike, make for about 3 out of every 100 births in the United States, reports BabyCenter.com. Identical twins, which are babies that develop from one zygote and split to form two embryos are still extremely rare, coming in at 3 to 5 out of every 1,000 births in the United States. However, the birth of twins has been steadily on the rise, for several reasons (women waiting longer to have children and women utilizing new science to get pregnant are a few of the factors involved in the increase).

So who are some of the celebrities part of a twin set? We gathered up some of the most surprising (and a few obvious ones, we still see you Mary-Kate and Ashley) celebrity twins. Slide through, and prepare to see double.