In one sentence, describe what the following article is about:

It's a yellow app containing the outline of a white ghost. Enter your username and password if you're not automatically logged in. Doing so takes you to the user screen. It's in the upper-right corner of the screen and takes you to the Settings menu. It's at the bottom of the menu. This will prompt you to create a new Snapchat account. Type your first and last name in the provided spaces. Then enter your birthday, when prompted, and tap continue. Choose the new username you'd like to have associated with your Snapchat account. This email address must be different from the one associated with your old Snapchat account. From here, you can skip steps and add new or old friends from your contacts. Once you've got your account set up, you can go back and change your email and phone number from the Settings menu. You can delete your old Snapchat account, if you like, or leave it active if you think you may return to it.
Open Snapchat. Swipe down anywhere on the screen. Tap ⚙️. Scroll down and tap Log Out. Tap Sign Up. Enter your name. Tap Sign Up & Accept. Enter your new username. Enter an email address. Follow the rest of the onscreen prompts.