Run by Kimberley and her team, the Fat Quarter Shop stocks a massive range of fabric, patterns, notions, quilt kits and more. They are responsible for a large chunk of my stash - the website is really easy to navigate, they ship incredibly quickly and their service is superb.
Fat Quarter Shop run a large number of Block of the Month (BOM) programs. One of my favorites (and one I'm very tempted to join) is the Toes in the Sand BOM, designed by Julie Hermann of Jaybird Quilts. I'm in a triangle loving phase right now :o)
The range of fabric they carry is astounding. Some of their new bundles include Grunge Basics by BasicGrey for Moda. These would make such great background fabrics!
Shelburne Falls by Denyse Schmidt. Droool.
Fat Quarter Shop also have loads of free quilt patterns available on their website. And there is a great sale section (one of the first places I look for backing fabrics).
You can find links to all the Fat Quarter Shop's social media on my sponsors page. It is definitely worth checking out their blog, too - there are constantly amazing giveaways on offer.