FabFitFun is generally considered legit. The subscription service has a rating of 3.9 stars from over 4,000 reviews on Sitejabber, indicating that most customers are satisfied with their purchases. Customers frequently mention good customer service, full-size products, and seasonal boxes. However, some users have reported issues with customization and billing. Overall, FabFitFun is a reputable subscription box service with a large customer base and positive feedback.