Plain empire waist dress with puffed kimono sleeves. Surplice neckline and elasticated cuffs. Knee length, flowing fabric. Draped effect at the bust, elasticated waist at the back.
The very refined dress satisfies all of your desires. For day, team it with flat shoes and a shoulder bag. For evening, slip on lightweight heeled sandals and a leather or canvas clutch. Add a lightweight stole to protect yourself from cool breezes.