• Lady Gaga wore a Valentino haute couture gown to the 2019 Golden Globes on Sunday.
  • The singer accessorized the dress with a custom-made necklace by Tiffany & Co. called the Tiffany Aurora, the company said in a press release.
  • The necklace features over 300 diamonds, including one 20-carat pear-shaped diamond at the center of the opulent piece.
  • The Tiffany Aurora was named after the goddess of dawn and a cluster of stars – a nod to Gaga’s role in “A Star Is Born.”
  • The actress took home a Globe for best original song in a motion picture, alongside “Shallow” co-writers Mark Ronson, Anthony Rossomando, and Andrew Wyatt.

Lady Gaga dazzled on the red carpet at the Golden Globes in over 100 carats of diamonds.

On Sunday, the singer attended the awards ceremony, held at the Beverly Hilton Hotel in Beverly Hills, California, in a head-turning periwinkle gown with voluminous half sleeves and a long dramatic train.

The “A Star Is Born” actress – who took home the Globe for best original song in a motion picture, alongside “Shallow” co-writers Mark Ronson, Anthony Rossomando, and Andrew Wyatt – also dyed her hair blue to match her Valentino haute couture dress.

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Foto: Lady Gaga wore one of the most memorable looks of the night.sourceAxelle/Bauer-Griffin/FilmMagic via Getty Images

Lady Gaga accessorized the unforgettable gown with a diamond necklace custom-made by Tiffany & Co., according to a press release from the company.

Named after the goddess of dawn and a cluster of stars - a nod to Gaga's role in "A Star Is Born" - the necklace features over 300 diamonds, including one 20-carat pear-shaped diamond at the center of the opulent piece.

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In an email to INSIDER, a representative for Tiffany & Co. said Gaga also wore $115,000 platinum diamond earrings and three platinum diamond bracelets that cost $145,000, $130,000, and $45,000 - all designed by the company.

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Foto: Gaga's custom-made diamond necklace was unmissable.sourceSteve Granitz/WireImage via Getty Images

Jewelry aside, Gaga's red-carpet look was a standout for another reason: It seemed to pay homage to a gown Judy Garland wore in the 1954 adaptation of the original "A Star Is Born" film, released in 1937.

Garland played aspiring singer-turned-star Esther Blodgett, who has her named changed to Vicki Lester partway through the film; Gaga played the corresponding leading role in Bradley Cooper's 2018 remake of the movie, although her character is named Ally, not Esther.

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Foto: Garland's dress in the 1954 remake of "A Star Is Born" and Gaga's Globes dress look similar.sourceWarner Bros. and Valerie Macon/AFP/Getty Images

Read more: Lady Gaga's blue ball gown looks almost exactly like one Judy Garland wore over half a decade ago in 'A Star Is Born'

In one scene of the 1954 adaptation, Garland wears a pale lilac-colored gown that has a fitted bodice and voluminous skirt, just like the Valentino design Gaga wore to the Globes on Sunday.

Although Garland's look also features elbow-length gloves and dark purple fabric gathered near her shoulders, like a mock bolero jacket, Gaga's dress has sleeves that wrap around her lower arms, leaving her shoulders completely exposed.

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