Cannes 2019: Leo DiCaprio and girlfriend Camila Morrone walk red carpet separately

Leonardo DiCaprio and his girlfriend, Camila Morrone, hit the red carpet for the premiere of his latest film at the Cannes Film Festival on Tuesday -- but they opted to do so separately.

The couple, who has been dating for a little over a year, both stepped out for Quentin Tarantino's highly-anticipated "Once Upon a Time in Hollywood" premiere, where co-stars Brad Pitt and Margot Robbie were also on-hand to celebrate the movie's first ever showing.

SEE ALSO: Inside Leonardo DiCaprio's 'very serious' relationship with Camila Morrone

Morrone, 21, was absolutely stunning in an off-white strapless gown with a feathered hemline. She finished off the chic look with a sleek updo and an eye-catching diamond statement necklace. 

See photos of Camila Morrone at the 2019 Cannes Film Festival:

16 PHOTOS
Camila Morrone at Cannes 2019
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Camila Morrone at Cannes 2019
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by John Phillips/Getty Images)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Gisela Schober/Getty Images)
US model and actress Camila Morrone poses as she arrives for the screening of the film "Once Upon a Time... in Hollywood" at the 72nd edition of the Cannes Film Festival in Cannes, southern France, on May 21, 2019. (Photo by LOIC VENANCE / AFP) (Photo credit should read LOIC VENANCE/AFP/Getty Images)
US model and actress Camila Morrone poses as she arrives for the screening of the film "Once Upon a Time... in Hollywood" at the 72nd edition of the Cannes Film Festival in Cannes, southern France, on May 21, 2019. (Photo by LOIC VENANCE / AFP) (Photo credit should read LOIC VENANCE/AFP/Getty Images)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
US model and actress Camila Morrone poses as she arrives for the screening of the film "Once Upon a Time... in Hollywood" at the 72nd edition of the Cannes Film Festival in Cannes, southern France, on May 21, 2019. (Photo by Alberto PIZZOLI / AFP) (Photo credit should read ALBERTO PIZZOLI/AFP/Getty Images)
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Meanwhile, DiCaprio, 44, opted for a classic tuxedo as he posed alongside his co-star, Pitt.

Morrone and DiCaprio's separate red carpet appearance on Tuesday comes a few days after photos went viral of the former "Titanic" actor taking photos of Morrone on the beach in Cannes. 

SEE ALSO: Leonardo DiCaprio, Margot Robbie and Brad Pitt attend 'Once Upon a Time in Hollywood' premiere

Last November, sources described the couple as "very serious" and claimed that they have already "talked about getting engaged." Insiders say that the notorious bachelor, who has never been engaged, is finally ready to settle down after years of dating a long list of much younger women.

"Everyone is saying that marriage could be soon for them," a source told Us Weekly, adding that the Oscar winner is "ready to have kids."

See more photos from the "Once Upon a Time in Hollywood" premiere:

22 PHOTOS
Cannes 2019: Day 8
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Cannes 2019: Day 8
CANNES, FRANCE - MAY 21: Leonardo DiCaprio and Brad Pitt attend the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
CANNES, FRANCE - MAY 21: Brad Pitt, Leonardo DiCaprio, Quentin Tarantino and Margot Robbie attend the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Gisela Schober/Getty Images)
US actor Leonardo DiCaprio (L) and US actor Brad Pitt pose as they arrive for the screening of the film "Once Upon a Time... in Hollywood" at the 72nd edition of the Cannes Film Festival in Cannes, southern France, on May 21, 2019. (Photo by Valery HACHE / AFP) (Photo credit should read VALERY HACHE/AFP/Getty Images)
CANNES, FRANCE - MAY 21: Margot Robbie attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Quentin Tarantino and Margot Robbie attend the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 21: Dakota Fanning attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 21: Winnie Harlow attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Elle Fanning attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 21: Elle Fanning attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Michelle Rodriguez attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 21: Camila Morrone attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 21: Hana Cross and Brooklyn Beckham attend the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
CANNES, FRANCE - MAY 21: Sara Sampaio attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 21: Quentin Tarantino and Daniela Pick attend the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Vittorio Zunino Celotto/Getty Images)
CANNES, FRANCE - MAY 21: Margot Robbie attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Destin Christopher Tucker and Chris Tucker attend the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 21: Coco Rocha attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by George Pimentel/WireImage)
CANNES, FRANCE - MAY 21: Josephine Skriver attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
CANNES, FRANCE - MAY 21: Karolina Kurkova attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by George Pimentel/WireImage)
CANNES, FRANCE - MAY 21: Soo Joo Park attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 21: Chloe Sevigny attends the screening of "Once Upon A Time In Hollywood" during the 72nd annual Cannes Film Festival on May 21, 2019 in Cannes, France. (Photo by Daniele Venturelli/WireImage)
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