Also known as: 純真のナイトドレス, セイバードレスコード
Saber (Fate) in her Pure Night Dress outfit, released as a DLC costume in Fate/Extella. The design was first featured in promotional artwork for TYPE-MOON's 10th anniversary. Nero Claudius (Fate) has an identical dress except hers has red trim, whereas Saber's has blue.
Not to be confused with Saber Lily, or her outfit in Fate/Unlimited Blade Works (post #1966930).