Golden Globes: Lady Gaga owns the red carpet in purple dress, talks 'A Star Is Born' moments

Lady Gaga stole the show when she arrived at the Golden Globes red carpet on Sunday in stunning lavender Valentino Couture gown.

Gaga paired the showstopping dress with a custom necklace from Tiffany & Co, which included 300 diamonds and a 20-carat pear shaped diamond at the heart of the piece.

Gaga's red carpet appearance sparked reactions on social media, including some who pointed out her dress selection seemed to pay homage to 1954's "A Star Is Born" lead, Judy Garland.

USA TODAY reached out to Gaga's rep for comment.

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Backstage celebrating a Golden Globe win for best original song "Shallow," Gaga was the standout with her fellow cast members from "A Star is Born." Song co-writer Mark Ronson walked to the podium carrying Gaga's elaborate train.

"This is how we got the job," he quipped.

Ronson called Gaga a "genius" in the writing room. "She’s the master chef. And we’re all just holding up celery, going, 'Do you like this?' "

Gaga paid respects to the past "A Star Is Born" films in her remarks.

"It’s a privilege to be a part of a film that already has a legacy," she said. "To create something new and honoring what happened in the past."

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During an interview with E!'s Ryan Seacrest, the actress and singer revealed she broke down while filming a scene with co-star Bradley Cooper.

"I remember my very first scene with Bradley, he was trying to get me out of my head," she recalled. "So I said my line, and then he said something back to me that wasn't the line that I thought he was going to say. So I just said my same line again and he said something else to me and I just said my same line again."

She continued, "He said, 'Are you OK?' And I was like, 'No, I'm not OK,' and he said, 'Do you need to cry?' and I said, 'I think so' and I started crying and then I kind of let it go … and then the scene happened as written, but it happened in a much more organic way."