I've been longing to crochet slippers for quite a while. I found a cute pair at this site. This led me to the original pattern, given at this site. These yarn pros convinced me that slippers are easy-peasy. I did tweak their patterns some, as I'll discuss at the end of this post.
Row 1: Chain 4 and use a slip stitch to form a loop.
Row 2: Chain 3 (as your 1st DC) and then do 6 DC in the loop. Close with a sl st.
Row 3 & 4: begin with 3 chains and then do two DC in each stitch.
Row 5-11: begin with 3 chains and do one DC in each stitch. In row 8, I added one more stitch. In these rows, you're making the body of the slipper that goes around your toes and the front of your foot.
Row 12: Turn. Chain 3. DC in the next stitch, and one DC in each of the next 18 stitches. Counting the 3-chain, this gives you a total of 20 stitches around.
Row 13-22: Turn. Chain 3. DC in the next stitch, and one DC in each stitch across. In rows 17 and 21, I added one additional DC at each end of these rows, so that the slipper would come up a little higher as I worked toward the heel (see photo above). Tie off.
Fold the heel end in half and stitch closed on the inside of the slipper, with yarn and a tapestry needle.
I used the trim recommended in the original pattern, with one SC and one chain all the way around.
I'm in the U.S., so my single and double crochets are U.S. standards.
This slipper should give you a nearly perfect size 9 (U.S.). If you need a smaller slipper, look online for a conversion chart for women's shoe sizes and inches in foot length.