Rihanna Stuns in Sexy Gold Gown at Diamond Ball, Gushes Over 'Feisty' Baby Cousin Majesty

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Rihanna knows how to make an entrance!

The "FourFiveSeconds" singer shined in a stunning golden gown on the red carpet at the second annual Diamond Ball, held at the Barker Hangar in Santa Monica, California on Thursday.

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The 27-year-old Barbadian beauty could not have looked more regal in the low-cut vintage Christian Dior dress, complimented by a dazzling, jewel-encrusted necklace.

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Rihanna pulled out all the stops for the star-studded charity gala, which supports the Clara Lionel Foundation -- an organization she founded in 2012 in honor of her grandparents, Clara and Lionel Brathwaite -- that works to improve the quality of life for underprivileged communities across the globe.

Rihanna spoke with ET’s Kevin Frazier on the red carpet, where she opened up about her grandmother, who died of cancer in 2012.

"She is definitely here in spirit and she feels delighted to be a part of such a great cause, raising money in her honor, to help, save and change many lives," Rihanna said.

The "Diamonds" singer also took the opportunity to make Majesty -- the 18-month-old daughter of Rihanna's cousin, Noella Alstrom -- feel like a superstar.

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"Majesty is a feisty one, just like all the woman in my family," Rihanna gushed to ET. "She already has her personalities. It’s so cute."

While she was open about how much she loved her little cousin, Rihanna was a bit more reserved when it came to discussing her long-awaited album ANTI,and when fans can expect to be able to pick it up.

"The album is coming soon!" Rihanna promised, without giving away any specifics.

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Rihanna pulled out all the stops for the star-studded charity gala this year after the first annual Diamond Ball generated over $2 million in donations.

The charitable proceeds were used to renovate and transform the Queen Elizabeth Hospital in Barbados "into the most modern cancer treatment facility in the Caribbean," she recently told ET before the night of the big event. "I am beyond proud of the work the Clara Lionel Foundation has done."

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Check out the video below for a look at last-year's Diamond Ball where Brad Pitt, Jimmy Kimmel, Kim Kardashian, Big Sean and Salma Hayek where among a number of stars to attend the black tie event.