Closet Pixie can be installed on both desktops and laptops running Windows and Mac OS. You'll need the Google Chrome browser, if you don't already have one, you can install it here. Use this link to add My Closet Pixie to your Google Chrome or Mozilla Firefox.
Go to Poshmark.com, Poshmark.ca, Poshmark.com.au, Poshmark.in depending on your location. Wait for My Closet Pixie to load and pop up, then press Sign Up. Enter the email and password you want to use for My Closet Pixie.
After signing up, you can start a free 7-day trial immediately. No credit card information is required, just press any button and the trial can begin.