In Cinderella Which step sister is the oldest?

In the original fairy tale by Charles Perrault, it's never explicitly stated which stepsister is older. The names of the stepsisters are not even mentioned.

However, in most adaptations of the story, the stepsister who is meaner and more envious of Cinderella is usually portrayed as the older one. This is often because she has had more time to develop these negative traits.

So, while the original story doesn't tell us, it's generally assumed in adaptations that the more cruel stepsister is the elder.