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Diamonds are a girl's best friend!

Cameron Diaz donned a nude Gucci gown, and was dripping in Tiffany & Co. jewels worth approximately $1 million, at the Academy Awards, on Sunday Night.

The Bad Teacher star has never been nominated for an Oscar, but she's had plenty of practice at being a presenter! Diaz is set to present an award tonight with pal Jennifer Lopez.

Other presenters include Emma Stone, Sandra Bullock, Christian Bale, Halle Berry, and Tom Cruise!