Glamour - Social Media Icons
This theme uses the Simple Social Icons Plugin. This plugin automatically installs with the theme.
Navigate to Appearance > Widgets and drag the widget labeled “Simple Social Icons” into a widget area.
The demo displays them in the Primary Sidebar, Block Sidebar and Nav Social Menu widget areas.
Configure the widget by choosing the icon size and color, and replace the # by adding the full URLs to your social profiles.
Here is a screenshot of the settings used in the Glamour demo: