don’t judge a book by its cover

(proverb) looks are not as important as what is inside

Example Sentences:

A: Eww, I’m not going into that nightclub. It looks terrible!
B: Hey, don’t judge a book by its cover. It looks bad on the outside, but it’s really nice inside.

When I first met my boyfriend, I thought he was really unattractive. After I got to know him, I realized that he was funny, intelligent, and really nice. I’m glad I didn’t judge a book by its cover, or I never would have married him!

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Similar idioms:

1. shoot from the hip
2. roll in