The 'My Sister And I Are Polar Opposites' meme typically features two siblings, often one embracing a dark 'goth' or 'alt' aesthetic and the other a bright 'preppy' or 'colorful' look. The image first gained viral traction on social media platforms like TikTok and Instagram as a way to illustrate how biological relatives can develop completely different identities. Beyond actual siblings, the template is widely used metaphorically to represent a single person's internal struggle between two moods, or to compare contrasting software, brands, and pop culture characters. It remains a staple for demonstrating that opposites don't just attract—they often share a dinner table.