Your Shih-poo's coat requires a lot of care, and it should show it! There are many styles of Shih-poo haircuts as well as the option to modify one of the popular styles or even create your own. The three things to keep in mind when styling your Shih-poo's coat are her health, her happiness and the season.
Shih-poos don't have a high tolerance for extreme weather, and even temperatures that seem merely uncomfortable to us can seem extreme to your Shih-poo. As such, short cuts are best for summer cuts, and for winter it's best for the torso to have somewhat long hair.
The puppy clip is the most common cut, and in particular is the Poodle puppy clip: the hair around the face, feet, neck and tail's base is shaved. The torso is left a bit longer (the length can depend on the climate and season, of course) and the tail is either shaved clean or left with a tuft of hair called a pom-pom. (If your Shih-poo has straight hair, a pom-pom is not recommended.)
There is a lamb clip that is best for the hot summer months, too. This is when the entire coat is clipped down to about a quarter-inch all over.
Of course, you can get creative and perhaps have a bit of a Schnauzer cut (where the legs and belly are left long, and the head and face are made box-like while the top is shaved), or the lion cut (where the head is made to look huge), or the teddy bear cut (for maximum cuteness!) or any combination that is clean, safe and cut for your Shih-poo!