Pinterest image feed is a WordPress plugin by harryfinn that gets your pins from Pinterest and displays them on your site via a widget.
The widget looks best when used in a wider widget area than your typical sidebar, such as a footer widget area. This is not to say that if you are looking to display your pins in the standard sidebar layout that this plugin won’t work. When setting up the widget simply set the ‘Responsive or Fixed’ setting to fixed and set the width of the pins in pixels to match that of your sidebar areas’s width or try experimenting with the Responsive setting!
The author notes: Pinterest public API is not yet available and current you can only make a request for the beta developer version.