Images or iframe in registration form?

Is it possible to have an "images" custom field where images related to the selection can be displayed? If not can an iframe be used to insert an image gallery?

Use case, for reference, is we are selling shirts at registration for an event and want to provide an option for the person to select color and size. We'd like to be able to show the shirts in the registration form so the registrant can intelligently pick based on the designs. 

Sorry Timothy. Our extension does not support this feature. This kind of feature, usually only available in a shopping cart extension

Regards,

Tuan