be (as) pure as the driven snow

To be virtuous and/or chaste. The bride looked as pure as the driven snow in her gown. Kate would never cheat on an exam—she's pure as the driven snow.

Common Names:

Name	Pronounced	Usage
Nila	-	Tamil, Indian, Hindi
Abdul-Aziz	-	Arabic
Ave	AH-ve	Estonian
Nikola (1)	-	Serbian, Croatian, Slovene, Bulgarian, Macedonian, Hungarian, Czech, Basque, Medieval Slavic
Saara	SAH:-rah	Finnish
Modestine	-	French