Icon Box is available as a quarterly upgrade for Glam Bag and BoxyCharm members, so if you already have one (or both!) of those memberships, simply visit the Icon Box tab and click on the “GET ICON BOX” button. If you don't have an IPSY membership, you'll need to sign up for one first to be eligible for Icon Box.
For your first Icon Box, if you upgrade to Icon Box after the 1st of the month and after you’ve been successfully billed for your Glam Bag and/or BoxyCharm, you may receive all three packages, or just two if it's not too late for Icon Box to replace your base bag.