Underwear affair! Victoria's Secret model Sara Sampaio bares all in see-through Cannes look

Suns out, buns out!

Sara Sampaio hit the red carpet for the screening of "The Killing of A Sacred Deer" at Cannes Film Festival on Monday rocking the oh-so-popular see-through trend, but she definitely took it a step further. The Portuguese beauty intentionally flashed cameras by wearing a white thong underneath the gown that exposed her butt cheeks.

Sara, 25, was a bit more modest with the front of her dress, which featured ruffles around the chest area and subtle floral detailing, but the back of her dress was a truly different story. It was clear Sara's perky posterior was the true star of the red carpet!

28 PHOTOS
Sara Sampaio bares all in see-through look at Cannes Film Festival
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Sara Sampaio bares all in see-through look at Cannes Film Festival
CANNES, FRANCE - MAY 22: Sara Sampaio attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Antonio de Moraes Barros Filho/FilmMagic)
CANNES, FRANCE - MAY 22: Sara Sampaio attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Antonio de Moraes Barros Filho/FilmMagic)
Portuguese model Sara Sampaio poses as she arrives on May 22, 2017 for the screening of the film 'The Killing of a Sacred Deer' at the 70th edition of the Cannes Film Festival in Cannes, southern France. / AFP PHOTO / LOIC VENANCE (Photo credit should read LOIC VENANCE/AFP/Getty Images)
CANNES, FRANCE - MAY 22: Sara Sampaio attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Tristan Fewings/Getty Images)
CANNES, FRANCE - MAY 22: Model Sara Sampaio attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Neilson Barnard/Getty Images)
Portuguese model Sara Sampaio poses as she arrives on May 22, 2017 for the screening of the film 'The Killing of a Sacred Deer' at the 70th edition of the Cannes Film Festival in Cannes, southern France. / AFP PHOTO / LOIC VENANCE (Photo credit should read LOIC VENANCE/AFP/Getty Images)
Portuguese model Sara Sampaio poses as she arrives on May 22, 2017 for the screening of the film 'The Killing of a Sacred Deer' at the 70th edition of the Cannes Film Festival in Cannes, southern France. / AFP PHOTO / Valery HACHE (Photo credit should read VALERY HACHE/AFP/Getty Images)
Portuguese model Sara Sampaio poses as she arrives on May 22, 2017 for the screening of the film 'The Killing of a Sacred Deer' at the 70th edition of the Cannes Film Festival in Cannes, southern France. / AFP PHOTO / Valery HACHE (Photo credit should read VALERY HACHE/AFP/Getty Images)
CANNES, FRANCE - MAY 22: Sara Sampaio attends 'The Killing Of A Sacred Deer' premiere during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
CANNES, FRANCE - MAY 21: Sara Sampaio attends the Fashion for Relief event during the 70th annual Cannes Film Festival at Aeroport Cannes Mandelieu on May 21, 2017 in Cannes, France. (Photo by Antony Jones/Getty Images)
CANNES, FRANCE - MAY 22: Sara Sampaio attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
CANNES, FRANCE - MAY 21: Sara Sampaio attends the Fashion for Relief event during the 70th annual Cannes Film Festival at Aeroport Cannes Mandelieu on May 21, 2017 in Cannes, France. (Photo by Antony Jones/Getty Images)
CANNES, FRANCE - MAY 20: Sara Sampaio attends the '120 Battements Par Minutes (120 Beats Per Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by Tony Barson/FilmMagic)
CANNES, FRANCE - MAY 20: Sara Sampaio attends the '120 Battements Par Minutes (120 Beats Per Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by Tony Barson/FilmMagic)
CANNES, FRANCE - MAY 20: Sara Sampaio attends the '120 Battements Par Minutes (120 Beats Per Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by Tony Barson/FilmMagic)
CANNES, FRANCE - MAY 20: Sara Sampaio attends the '120 Beats Per Minute (120 Battements Par Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by George Pimentel/WireImage)
CANNES, FRANCE - MAY 20: Sara Sampaio attends the '120 Beats Per Minute (120 Battements Par Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by Claudio Lavenia/Getty Images)
CANNES, FRANCE - MAY 20: Sara Sampaio attends the '120 Beats Per Minute (120 Battements Par Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by Andreas Rentz/Getty Images)
CANNES, FRANCE - MAY 19: Sara Sampaio attends the '120 Beats Per Minute (120 Battements Par Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by Kristina Nikishina/Epsilon/Getty Images)
CANNES, FRANCE - MAY 20: Oliver Ripley and Sara Sampaio attend the '120 Beats Per Minute (120 Battements Par Minute)' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 20, 2017 in Cannes, France. (Photo by Andreas Rentz/Getty Images)
CANNES, FRANCE - MAY 18: Sara Sampaio is spotted during the 70th annual Cannes Film Festival at on May 18, 2017 in Cannes, France. (Photo by Anthony Harvey/GC Images)
CANNES, FRANCE - MAY 18: Sara Sampaio is spotted during the 70th annual Cannes Film Festival at on May 18, 2017 in Cannes, France. (Photo by Anthony Harvey/GC Images)
CANNES, FRANCE - MAY 17: Sara Sampaio attends the 'Ismael's Ghosts (Les Fantomes d'Ismael)' screening and Opening Gala during the 70th annual Cannes Film Festival at Palais des Festivals on May 17, 2017 in Cannes, France. (Photo by Samir Hussein/WireImage)
CANNES, FRANCE - MAY 17: Sara Sampaio attends the 'Ismael's Ghosts (Les Fantomes d'Ismael)' screening and Opening Gala during the 70th annual Cannes Film Festival at Palais des Festivals on May 17, 2017 in Cannes, France. (Photo by Samir Hussein/WireImage)
CANNES, FRANCE - MAY 17: Sara Sampaio attends the 'Ismael's Ghosts (Les Fantomes d'Ismael)' screening and Opening Gala during the 70th annual Cannes Film Festival at Palais des Festivals on May 17, 2017 in Cannes, France. (Photo by Samir Hussein/WireImage)
CANNES, FRANCE - MAY 17: Sara Sampaio and Fawaz Gruosi attend the 'Ismael's Ghosts (Les Fantomes d'Ismael)' screening and Opening Gala during the 70th annual Cannes Film Festival at Palais des Festivals on May 17, 2017 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 17: Sara Sampaio attends the 'Ismael's Ghosts (Les Fantomes d'Ismael)' screening and Opening Gala during the 70th annual Cannes Film Festival at Palais des Festivals on May 17, 2017 in Cannes, France. (Photo by Antony Jones/Getty Images)
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And if you really care about the rest of her look, the Victoria's Secret model rocked a red lip that matched the red carpet, kept her brunette tresses in a low bun and iced herself with some massive jewels.

Sara's provocative number is the latest in her long list of show-stopping styles at Cannes. The model has been hitting one red carpet after another since the movie festival began last week. At the screening of "120 Beats Per Minute," Sampaio dazzled in a sparkly lavender-hued jumpsuit with a ornate neckline, and at the festival's opening gala she was a vision in a deep red ball gown.

A number of other stars hit the red carpet for the screening of "The Killing of A Sacred Deer," including Nicole Kidman and Eva Longoria.

Check out all the fun from Day 6 of Cannes Film Festival in the slideshow below!

44 PHOTOS
Cannes Film Festival 2017: Day 6
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Cannes Film Festival 2017: Day 6
CANNES, FRANCE - MAY 22: Pamela Anderson attends The Harmonist Party during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
CANNES, FRANCE - MAY 22: Pamela Anderson attends The Harmonist Party during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Stephane Cardinale - Corbis/Corbis via Getty Images)
CANNES, FRANCE - MAY 22: Francesca Dutton attends The Harmonist Gala Event during the 70th annual Cannes Film Festival at Club Albane on May 22, 2017 in Cannes, France. (Photo by Neilson Barnard/Getty Images)
CANNES, FRANCE - MAY 22: Betty Bachz attends The Harmonist Gala Event during the 70th annual Cannes Film Festival at Club Albane on May 22, 2017 in Cannes, France. (Photo by Neilson Barnard/Getty Images)
CANNES, FRANCE - MAY 22: Albana Osmani attends The Harmonist Gala Event during the 70th annual Cannes Film Festival at Club Albane on May 22, 2017 in Cannes, France. (Photo by Neilson Barnard/Getty Images)
CANNES, FRANCE - MAY 22: Camilla Kerslake attends The Harmonist Gala Event during the 70th annual Cannes Film Festival at Club Albane on May 22, 2017 in Cannes, France. (Photo by Neilson Barnard/Getty Images)
PARIS, FRANCE - MAY 22: Andie MacDowell attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 22: Marion Cotillard attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
CANNES, FRANCE - MAY 22: Liu Wen attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
PARIS, FRANCE - MAY 22: Livia Firth attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 22: Whinnie Williams attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
PARIS, FRANCE - MAY 22: Izabel Goulart attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 22: Salma Hayek attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
PARIS, FRANCE - MAY 22: Charlize Theron attends the Chopard Trophy photocall at Hotel Martinez on May 22, 2017 in (Photo by Pascal Le Segretain/Getty Images)
CANNES, FRANCE - MAY 22: Nicole Kidman attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 22: Nicole Kidman at the 'The Killing of a Sacred Deer' photocall during the 70th Cannes Film Festival at the Palais des Festivals on May 22, 2017 in Cannes, France. PHOTOGRAPH BY John Rasimus / Barcroft Images London-T:+44 207 033 1031 E:hello@barcroftmedia.com - New York-T:+1 212 796 2458 E:hello@barcroftusa.com - New Delhi-T:+91 11 4053 2429 E:hello@barcroftindia.com www.barcroftimages.com (Photo credit should read John Rasimus / Barcroft Images / Barcroft Media via Getty Images)
CANNES, FRANCE - MAY 22: Kendall Jenner is spotted during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Robino Salvatore/GC Images)
CANNES, FRANCE - MAY 22: Elle Fanning attends Fondazione Prada Private Dinner during the 70th annual Cannes Film Festival at Restaurant Fred L'Ecailler on May 22, 2017 in Cannes, France. (Photo by Jacopo Raule/Getty Images for Prada)
CANNES, FRANCE - MAY 22: Jessica Chastain attends Fondazione Prada Private Dinner during the 70th annual Cannes Film Festival at Restaurant Fred L'Ecailler on May 22, 2017 in Cannes, France. (Photo by Jacopo Raule/Getty Images for Prada)
CANNES, FRANCE - MAY 22: Fantine Harduin and Jean-Louis Trintignant attend the 'Happy End' photocall during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Andreas Rentz/Getty Images)
CANNES, FRANCE - MAY 22: Actors Kim Saebyuk, Cho Yunhee, Haehyo Kwon and Kim Min Hee attend the 'The Day After (Geu Hu)' photocall during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
CANNES, FRANCE - MAY 22: Juliette Binoche is potted at the 'Majestic' hotel during the 70th annual Cannes Film Festival on May 22, 2017 in Cannes, France. (Photo by Pierre Suu/GC Images)
CANNES, FRANCE - MAY 22: Anja Rubik is spotted at the 'Majestic' hotel during the 70th annual Cannes Film Festival on May 22, 2017 in Cannes, France. (Photo by Pierre Suu/GC Images)
CANNES, FRANCE - MAY 22: Anna Cleveland is potted at the 'Majestic' hotel during the 70th annual Cannes Film Festival on May 22, 2017 in Cannes, France. (Photo by Pierre Suu/GC Images)
CANNES, FRANCE - MAY 22: Jasmine Sanders attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
CANNES, FRANCE - MAY 22: Sonam Kapoor attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 22: Eva Longoria attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 22: Sara Sampaio attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Antonio de Moraes Barros Filho/FilmMagic)
CANNES, FRANCE - MAY 22: Kristina Bazan attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
British actress Kristin Scott Thomas poses as she arrives on May 22, 2017 for the screening of the film 'The Killing of a Sacred Deer' at the 70th edition of the Cannes Film Festival in Cannes, southern France. / AFP PHOTO / LOIC VENANCE (Photo credit should read LOIC VENANCE/AFP/Getty Images)
CANNES, FRANCE - MAY 22: Lady Victoria Hervey attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
CANNES, FRANCE - MAY 22: Lana El Sahely attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 22: Izabel Goulart attends 'The Killing Of A Sacred Deer' premiere during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Dominique Charriau/WireImage)
CANNES, FRANCE - MAY 22: Jourdan Dunn attends 'The Killing Of A Sacred Deer' premiere during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Venturelli/WireImage)
CANNES, FRANCE - MAY 22: Keith Urban attends the 'The Killing Of A Sacred Deer' screening during the 70th annual Cannes Film Festival at Palais des Festivals on May 22, 2017 in Cannes, France. (Photo by Gisela Schober/Getty Images)
CANNES, FRANCE - MAY 22: Singer Seal arrives at Nice airport during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Marc Piasecki/GC Images)
CANNES, FRANCE - MAY 22: Paz Vega is spotted during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Jacopo Raule/GC Images)
CANNES, FRANCE - MAY 22: Hofit Golan is spotted at Hotel Martinez during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Jacopo Raule/GC Images)
CANNES, FRANCE - MAY 22: Eva Longoria is spotted at Hotel Martinez during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Jacopo Raule/GC Images)
CANNES, FRANCE - MAY 22: Ashley Benson is spotted during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Jacopo Raule/GC Images)
CANNES, FRANCE - MAY 22: Barbara Palvin is spotted at Hotel Martinez during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Jacopo Raule/GC Images)
CANNES, FRANCE - MAY 22: Caroline Receveur arrives at Nice airport during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Marc Piasecki/GC Images)
CANNES, FRANCE - MAY 22: Director Sofia Coppola arrives at Nice airport during the 70th annual Cannes Film Festival at on May 22, 2017 in Cannes, France. (Photo by Marc Piasecki/GC Images)
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