Cut out and bake sugar cookies using the Sanderson Sisters cutters, according to the instructions in my Vanilla Orange Sugar Cookies recipe.
Prepare one batch of my Royal Icing Recipe for Cookie Decorating.
Place about ¾ cup of icing into each of four small bowls. Tint one black, one yellow, one orange and one ivory or light peach. Using lemon juice, thin the icings to "two step" consistency (see post for Royal Icing for Cookie Decorating) and carefully transfer each color to a squeeze bottle. Top each bottle with a coupler. Place a #3 round tip on top of each bottle.
Divide the remaining icing among four clean small bowls. Tint one yellow, one orange, one purple and one red. Using lemon juice, thin the icings only slightly to piping consistency, so that they are less stiff but still not runny and will hold their shape when piped. Transfer the icings to piping bags fitted with a coupler and #2 round tips.
Using the ivory icing in the squeeze bottle, pipe and fill the shapes of the sisters' faces, as shown in the Step by Step Photos, above. If you have a food-safe marker, use it to draw the shape to guide you.
Using the orange icing in the squeeze bottle, outline and fill Winifred Sanderson's hair. Using the black icing in the squeeze bottle, outline and fill Mary Sanderson's hair. Using the yellow icing in the squeeze bottle, outline and fill Sarah Sanderson's hair. Let icings dry at least 30 minutes to set.
Using orange icing in the piping bag, pipe hair texture details on Winifred's hair, as shown above. Using purple icing in the piping bag, pipe hair details on Mary's hair, as shown. Using yellow icing in the piping bag, pipe hair details on Sarah's hair.
Use black icing in the squeeze bottle to pipe eyes onto each cookie and eyebrows on the Sarah cookies.
Use red icing in the piping bag to pipe lips onto the Winifred cookies. Top the lips with two sugar pearls to mimic her teeth.
Use red icing to pipe lips onto the Mary cookies, as shown above. Allow cookies to dry at least 5 hours or overnight.