mila kunis look every inch the Hollywood pin-up in London on Tuesday night.

Dripping in precious stones, the star wore her shiny brunette locks in loose curls pulled to one side to reveal her drop precious drop earrings.

Mila was attending a short film preview celebrating Gemfields' Mozambican rubies at The Corinthia Hotel in London as well as a reception in Holland Park, where she wore a plunging asymmetric white Antonio Berardi dress.

Mila fully believes in the ethical and environmentally-responsible mining of coloured gemstones, and even teamed up with the company to design a “motherhood ring” after welcoming Wyatt Isabelle last year.

Of her work with the company, Mila has said: "While in Africa, I learned that the entire journey that each Gemfields stone takes is carefully considered and that the environment and the local communities where its mines are located are held in the highest regard.