See 40 Photos of Celebrities With Their Lookalike Sisters

Anyone with a sister can relate to that question: "Are you so and so's sister?!?" When you're famous (or your sibling is), it may get a little old. But we doubt these lookalike siblings get asked it very often — their nearly identical looks say enough. From siblings who are both in the industry to stars and their non-famous sisters you didn't even know existed, see who made our list.