Knee length dresses are dresses that fall at or slightly below the knee. This length strikes a balance between modesty and style. 

Tea-Length dresses, which typically fall between the knee and the ankle, are a classy and elegant choice. They offer a slightly more formal look, without being overly extravagant.

Maxi dresses which flow to the ankle or floor, can be appropriate if they are not overly casual or revealing. Choose a maxi dress with a modest neckline and avoid excessive slits.