Kim Kardashian’s selfie trick has been revealed! Whether you love her or love to hate her, there is no denying that the 34-year-old reality star knows how to work the camera. From her stunning Instagram and Twitter photos, to magazine shoots, Kim K. knows how to look flawless. But how does she do it? According to one insider, it all comes down to an app.

“Kim and all the Kardashians use the app Perfect365 to touch up their photos before they post them on social media,” a source told Us Weekly. “The Kardashians have gotten all of their friends into it.”

So, what is Perfect365? We’re breaking everything you need to know about Kim’s alleged go-to app for selfies:

  1. It’s free! According to the Apple app store, Perfect365 is a free “digital makeup and photo retouching app.” The description boasts that it can help users look like models in their selfies.
  2. Kim is not the only one using the app. The app reportedly has over 40 million users. Plus, users can check out style tips and updates on the app’s official Facebook, Twitter and Instagram pages.
  3. What exactly does the app do? Everything from making a small blemish disappear to adding makeup. Users can also change things like their hair color and eye color.

The rumor about the Perfect365 app comes just a few days after a report that the “Keeping Up With the Kardashians” star employs a “professional selfie retoucher.” According to OK! Magazine, Kim hired a “pro” to touch up her photos day or night. This retoucher allegedly makes $100,000 and must be available at all times of the day. An app sounds a lot easier.