Sydney Sweeney is shutting down critics of her controversial "Euphoria" scenes and making it clear that she stands by her work as her character Cassie Howard.The 28-year-old actress and the HBO drama series have faced backlash over her portrayal of Cassie in the third and final season in which her character dove into the world of OnlyFans and creating sexually explicit content.On Tuesday, Sweeney hit back at her detractors with a brief but pointed message on Instagram along with a carousel of behind-the-scenes images that included some of Cassie's most provocative season three looks.SYDNEY SWEENEY WRANGLES PYTHON NEARLY NUDE IN 'EUPHORIA' AS FANS BLAST 'SNOOZE FEST' SEASON"it’s called… acting," Sweeney wrote in the caption of her slideshow, which included photos in which the actress was seen almost completely nude.Sydney Sweeney is firing back at critics of her character's provocative scenes in the third season of "Euphoria." (Tommaso Boddi/GA/The Hollywood Reporter/Getty Images)In one image, Sweeney went topless and wore sheer nude stockings with strategically placed leaf-shaped coverings as she posed with a giant python.Sweeney was seen topless wearing only a pair of nude thong underwear as the python wrapped itself around her body in another photo.In a mirror selfie, the "Anyone But You" star donned a brown dog costume comprised of dog ears, a collar, a leash, wristbands and a satin corset.Sydney posted a selfie while wearing a dog costume she wore on the show.(Sydney Sweeney/Instagram)'EUPHORIA' FACES BACKLASH AFTER SYDNEY SWEENEY'S MOST X-RATED EPISODE YETWhen the fetish-inspired dog-costume scene aired during the season, it quickly became one of "Euphoria's" most polarizing moments, triggering widespread backlash from viewers who criticized the storyline as excessive and unnecessarily provocative.In other photos, Sweeney was seen posing in a tiny hot pink string bikini while kneeling on a bar, hanging upside down from a stripper pole and wearing the low-c...