Planet Fleece  - United Kingdom

Check out their gorgeous kiddies Printed Fleece. This is a one-stop shop for fabrics and notions "dedicated to keep you warm and cosy whatever the weather!” (They ship to the UK and all countries within the EU. )

Fabric.com - USA & internationl

Has a large range of Plain and Novelty Polar Fleece (cute monkeys and things). They also sell gorgeous Flannel Fabrics including baby prints - (great for doll clothes), and some awesome Faux Fur Fabric in bright funky luminous colours which  has a long 1.5'' shaggy pile, perfect for the Snugglies/ Dippy Dinosaurs and Horsey/Unicorn manes!
( Based in the USA, but will ship internationally.)

The Fleece Lady - USA

Has a huge variety of Fleece Fabrics at discount prices. They only accept orders online. (They ship to all USA and US territories. )

Minky Delight - USA

This online Minky Specialist supplier has a huge variety of Minky,incliding 40 plain colours, stripes, dots, florals, retro and even animal print minky! They also stock Chenille and Fun Flannel.