lightsystem

The plugin is configurable letting you define what feeds to read and how often to read them. It also lets you decide whether you want to store the external images locally, inserting them into the media gallery, or otherwise simply hotlink them (that is the default).
You will find these settings in your administration page on the Settings->RSS Settings sub-menu.
Check out the <a href="https://github.com/LightSystem/WordPress-Plugin-RSS-Sync" rel="nofollow ugc">project on GitHub</a>.

RSS Synchronisation

Use this plugin if you wish to read external RSS feeds into WordPress posts.

bkmacdaddy

Dee Teal

leepettijohn

Aida B.

This plugin allows you to place a widget on your sidebar that fetches the most recent contents of a Pinterest user’s RSS feed and displays the corresponding thumbnail images. You can choose whether to show the description below the image, and you can set the height and width of the thumbnails to fit your theme. You also have the option of showing 4 different sizes of the official “Follow Me On Pinterest” button below the list of your pins.
You can also use this plugin from your theme templates, to display images lists anywhere else on your blog and you can easily give them a fixed size or a maximum size with CSS styling.
Starting with plugin version 1.3, you can also add a list of thumbnails of your Pins to a post or a page in the editor using the shortcode [prw username=”Your Pinterest Username”]. (See FAQs for instructions).
Version 1.4 adds the capability of showing pins from a specific board in the widget or shortcode, rather than just all of the latest pins from a specific user. (See FAQs for instructions).
Note: This plugin is heavily based on the Image Feed Widget plugin created by Yorik van Havre (https://wordpress.org/extend/plugins/image-feed-widget/). As of version 2.0 it also utilizes the jQuery NailThumb script for image resizing (http://www.garralab.com/nailthumb.php) and no longer utilizes the timthumb.php script.

Pinterest RSS Widget

A widget to display thumbnails and titles of the latest Pinterest Pins from a specific user via their Pinterest RSS feed

RSS Synchronisation vs Pinterest RSS Widget