The My Sister's Wedding meme, widely recognized as the Fernanfloo Dress meme, features Salvadoran YouTuber Fernanfloo in two contrasting side-by-side photos. One image depicts him in a casual t-shirt labeled 'My sister's wedding,' while the other shows him elegantly dressed in a full tuxedo for a comparatively trivial event, such as a video game launch or a niche internet moment. Originating from Fernanfloo's actual social media posts, the format became a viral sensation on platforms like Reddit and Twitter around 2021. It is primarily used to humorously illustrate a person's intense dedication to their hobbies or subcultures over traditional, major life milestones.