If you go onto the Dreamy Whites website/blog, you'll see these flowers used as decor at the blogger's sister's wedding. She includes a link to Martha Stewart's site for making them (I believe just out of tissue, which is why they look so airy, but obviously not ideal for use as a pillow - just staging for the photo).

Check this out on Etsy - whimsypie. She makes these in many different colours, styles and edge choices. http://www.etsy.com/shop/whimsypie

I used a very similar paint color recently in my entire house and it's called Gallery White from Behr Premium Paints, it had a primer built in and in every area of my house (stairs, bathroom, entry, etc) I actually can clean it with a soapy rag and it recovers beautifully. It was nice because the white trim pops very well on it and Gallery White works well with all the whites in my home blending them together.

Check out this previous question for a potential source:

http://www.houzz.com/questions/19997/Pillows-can-be-found-where-