Mary-Kate and Ashley Olsen are 27 years old today. To celebrate their birthday, they wore... matching ...

What do you call these, anyway?

Sport sandals?

These two have made it a point not to dress similarly for years. And we’re not supposed to call them the Olsen twins anymore either. But can we call them the Olsen twins on their birthday if they’re working the same shoe game?

If they are wearing the same shoe game, since they’re fashion people now, is this some kind of new trend? Like new Birkenstocks for celebrities?