MIRRA is a full-stack, AI-powered virtual try-on platform designed to reduce e-commerce return rates by allowing users to visualize clothing and accessories before purchasing. The application features a real-time AR webcam mirror using MediaPipe Face Mesh and a photorealistic AI garment try-on powered engine. The frontend is built with Next.js, React, and Tailwind CSS on Vercel, while the backend utilizes a highly scalable, serverless architecture with Python FastAPI, AWS Lambda, and API Gateway.