Cute! (did you find it odd that she has mugs with no handles?)
And this is also a cutie:http://hazelnutgirl.blogspot.com/2009/07/hazelnuts-felt-bunny-tutorial.html
Visit me at That Yank In... and Traveling with That Yank
Custom Coffee Sleeve: http://www.lisaclarke.net/2010/11/09/custom-fit-mug-cozy/
Ruffled Tea/Coffee Cup Cozy: http://cheepideas.com/2010/11/ruffled-coffee-cozy/
Owl Cozy: http://blog.craftzine.com/archive/2010/11/how-to_owl_mug_cozy.html#more
cup cozy: http://sew4home.com/projects/kitchen-linens/768-scrap-it-ruffled-hot-cup-jacket
or for that Starbucks paper cup...
Coffee sleeve: http://www.whimsicalmermaid.com/2011/11/gifts-on-fly-coffee-cozies.html
More for those Starbucks cups!
Fabric coffee sleeve: http://sewingdork.blogspot.com/2011/11/make-your-own-coffee-cozy.html
Button-up cozy for your mug: http://whipup.net/2012/01/31/whipup-tutorial-button-up-cup-cosy/