Rihanna stuns in sexy gold gown at Diamond Ball, gushes over 'feisty' baby cousin Majesty

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Rihanna's Grammy Award Fashion Through the Years
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Rihanna stuns in sexy gold gown at Diamond Ball, gushes over 'feisty' baby cousin Majesty
Rihanna attends the 2nd Annual Diamond Ball at The Barker Hangar on Thursday, Dec. 10, 2015, in Santa Monica, Calif. (Photo by Jordan Strauss/Invision/AP)
LOS ANGELES, CA - JANUARY 25: Rihanna during the 56th annual GRAMMY Awards Pre-GRAMMY Gala and Salute to Industry Icons honoring Lucian Grainge at The Beverly Hilton on January 25, 2014 in Los Angeles, California. (Photo by Kevin Mazur/WireImage)
LOS ANGELES, CA - JANUARY 25: Recording Artist Rihanna attends the Roc Nation pre-Grammy brunch on January 25, 2014 in Los Angeles, California. (Photo by Paul Archuleta/FilmMagic)
LOS ANGELES, CA - FEBRUARY 10: Rihanna arrives at the 55th Annual Grammy Awards at the Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Dan MacMedan/WireImage)
LOS ANGELES, CA - FEBRUARY 10: (Exclusive Coverage) Rihanna and BET President of Music Programming and Specials Stephen Hill attend the Island Def Jam Grammy Party Sponsored By Samsung And Pepsi at Osteria Mozza on February 10, 2013 in Los Angeles, California. (Photo by Kevin Mazur/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Rihanna arrives at the The 55th Annual GRAMMY Awards on February 10, 2013 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Rihanna arrives at the The 55th Annual GRAMMY Awards on February 10, 2013 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Singers Ziggy Marley, Bruno Mars and Rihanna perform onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Kevin Winter/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Singers Ziggy Marley, Bruno Mars and Rihanna perform onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Kevin Winter/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Singer Rihanna performs onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)
LOS ANGELES, CA - FEBRUARY 10: Model Amber Rose (L) and singer Rihanna attend the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Rick Diamond/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Singer Rihanna onstage during the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
LOS ANGELES, CA - FEBRUARY 12: Singer Rihanna arrives at the 54th Annual GRAMMY Awards held at the Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Dan MacMedan/WireImage)
LOS ANGELES, CA - FEBRUARY 12: Singer Rihanna arrives at the 54th Annual GRAMMY Awards held at the Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Dan MacMedan/WireImage)
LOS ANGELES, CA - FEBRUARY 12: Rihanna arrives at The 54th Annual GRAMMY Awards at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - FEBRUARY 12: Rihanna arrives at The 54th Annual GRAMMY Awards at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES, CA - FEBRUARY 13: Rihanna arrives for the 53rd Annual GRAMMY Awards at the Staples Center, February 13, 2011 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
Drake and Rihanna perform onstage during The 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California. (Photo by Kevin Mazur/WireImage)
Singer Rihanna performs onstage during The 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California.
Singers Rihanna and Drake onstage during The 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California. (Photo by Michael Caulfield/WireImage)
Rihanna onstage during The 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California.
LOS ANGELES, CA - FEBRUARY 13: Singer Rihanna performs onstage during the 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LOS ANGELES, CA - JANUARY 31: Rihanna arrives at the 52nd Annual GRAMMY Awards held at the Nokia Theater on January 31, 2010 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
LOS ANGELES, CA - JANUARY 31: Rihanna arrives at the 52nd Annual GRAMMY Awards held at the Nokia Theater on January 31, 2010 in Los Angeles, California. (Photo by Gregg DeGuire/FilmMagic)
LOS ANGELES, CA - JANUARY 31: Rihanna and Taylor Swift attends the 52nd Annual GRAMMY Awards held at Staples Center on January 31, 2010 in Los Angeles, California. (Photo by Kevin Mazur/WireImage)
LOS ANGELES, CA - JANUARY 31: Beyonce and Rihanna attends the 52nd Annual GRAMMY Awards held at Staples Center on January 31, 2010 in Los Angeles, California. (Photo by Kevin Mazur/WireImage)
LOS ANGELES, CA - JANUARY 31: Musicians Rihanna and Taylor Swift attend the 52nd Annual GRAMMY Awards held at Staples Center on January 31, 2010 in Los Angeles, California. (Photo by Lester Cohen/WireImage)
BEVERLY HILLS, CA - FEBRUARY 07: R&B Soul singer Rihanna attends the 2009 GRAMMY Salute To Industry Icons honoring Clive Davis at the Beverly Hilton Hotel on February 7, 2009 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 07: Singers Miley Cyrus and Rihanna attend the 2009 GRAMMY Salute To Industry Icons honoring Clive Davis at the Beverly Hilton Hotel on February 7, 2009 in Beverly Hills, California. (Photo by Steve Granitz/WireImage)
LOS ANGELES - FEBRUARY 10: Singer Rihanna poses with the award for Best Rap/Sung Collaberation in the press room during The 50th Annual Grammy Awards held at the Staples Center on February 10, 2008 in Los Angeles, California. (Photo by Dan MacMedan/WireImage)
LOS ANGELES, CA - FEBRUARY 10: Singer Rihanna arrives to the 50th Annual GRAMMY Awards at the Staples Center on February 10, 2008 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
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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.

WATCH: Rihanna Sets Date for Her Star-Studded 2nd Annual Diamond Ball

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.

Rihanna Adorably Gushes Over 'Feisty' Younger Cousin Majesty

Rihanna knows how to make an entrance!

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.

WATCH: Rihanna Is the New Face of Dior, And Is the First Black Woman to Do So

"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.

NEWS: Rihanna Unveils Groundbreaking New 'Anti' Album Art Featuring Childhood Photo

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."

WATCH: Rihanna Talks Diamond Ball and Brad Pitt: 'I Can't Tell You How Happy I Am'

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