A dressmakers dummy is an essential piece of equipment for anyone serious about sewing and dressmaking. It allows you to fit garments on a life-size model, which means you can get a much better idea of how they will look when worn. You can also use a dressmakers dummy to help with pattern cutting and adjusting patterns to achieve the perfect fit.
There are many different types of dressmakers dummy available, ranging from basic models that are relatively inexpensive, to more sophisticated versions that come with adjustable features such as shoulders, bust and waistline. If you are just starting out in sewing and dressmaking, it is worth investing in a good quality beginner's model. Once you have gained more experience, you may want to upgrade to a more advanced version.
In general, dressmakers dummies are well worth the investment as they can save you time and money in the long run by helping you to create better fitting garments. They are also great for trying out new designs before committing to making them in fabric.