Cute little piggy for your Christmas tree, I have added lots of photos into this pattern to make it as beginner friendly as possible but you should have a prior knowledge of the following crochet stitches:
magic ring, slip stitch, chain, single crochet, double crochet, how to increase and decrease, how to crochet into back loops only and how to crochet in continuous circle.
If you are using aran/worsted (size 4) yarn and 4 mm crochet hook, your piggy will be approximately 8 cm tall without the string, this depends on your crochet tension. If you use different type of yarn, you will get either a smaller of larger piggy as a result.