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
Don	DAHN	English
Thutmose	thoot-MO-sə (English), thoot-MOS (English)	Ancient Egyptian (Anglicized)
Gwendoline	GWEN-də-lien (English), GWEN-də-leen (English)	Welsh, English (British), French
Ctibor	-	Czech
Sechnall	-	Irish
Dillon	['dilən]