Yes, the same WhiteWall photo calendar can be reordered in different sizes.
DUPLICATING AN EXISTING CALENDAR
An existing calendar saved in your customer account under "My Photo Calendars" can be duplicated and then edited to allow you to order the duplicated version in another size:
CREATING ANOTHER CALENDAR FROM YOUR UPLOADED PHOTOS
Photos that have been uploaded to the WhiteWall website to create a photo calendar are securely stored in your customer account. Keeping them stored in your account allows easy access and use for multiple calendar designs without the need to upload them again. This means that you have the flexibility to add a photo calendar to your shopping cart and then design another one right away, even if it's in a different size.