Actress Jennifer Lawrence sported a backwards diamond necklace worth $2 million at the 86th Academy Awards.

The 23-year-old paired her red Dior gown with a stunning carved rock crystal Neil Lane necklace, said to be the most expensive piece of jewellery to hit the red carpet, featuring 100 carats of diamonds and priced at $2 million, reports people.com.

The star, who was nominated in the best supporting actress category for her role in "American Hustle", made a similar style statement at last year's Academy Awards with her dazzling beaded chain.