This was a modification I did of the Fluffy Bunny Slippers on pg 234 of "Stitch'N Bitch Crochet The Happy Hooker" Get a book, then go here and print out the errata because there are a few errors in the pattern.
I used Lion Brand Jiffy yarn in white. Yes white, we will talk about how crazy I am later. If you wanted to use red for the bottom and white for the top that would probably be cool as well and they wouldn't get quite as dirty. Use one strand for the upper sole and slipper top and two strands for the sole bottom and ears.
I used an I hook for my size 8 slippers. I'm pretty sure mine turned out the same finished size as the book.
Follow the pattern from the book, Except for the ears.
Kitty ears-
Ch 6
row 1- hdc in 2nd ch from end, hdc to end. (4 stitches)
row 2- Ch 2 turn, 2 hdc2tog (put the last stitch in the turning chain to keep a straight edge)
row 3- Ch2 turn, hdc2tog (put last stitch in the turning chain as before)
fasten off and weave in the ends.
Sew these onto the slipper (you can use my picture for the placement)
Embroider the face on or use felt. I used this scan as a template for my second pair (I made the bow bigger and angled the ears more on the second pair. it makes them look better).
Don't forget the wiskers like I did. I'm an idiot and mailed these off without doing so. And I just NOW noticed. oops, sorry.