* Physical appearance: Monster High dolls are typically taller and thinner than Barbie dolls, and they have larger heads and eyes. They also have a variety of skin tones, hair colors, and eye colors, while Barbie dolls are more limited in their appearance.
* Clothing and accessories: Monster High dolls come with a variety of clothing and accessories, including clothes, shoes, jewelry, and makeup. Barbie dolls also come with a variety of clothing and accessories, but their clothes are often more traditional and less trendy.
* Target audience: Monster High dolls are typically marketed to children ages 6-12, while Barbie dolls are typically marketed to children ages 3-10.
* Price: Monster High dolls are typically more expensive than Barbie dolls.
Ultimately, the decision of which doll to buy for your child is a personal one. If your child is looking for a doll that is unique and different, then a Monster High doll may be a good option. If your child is looking for a more traditional doll, then a Barbie doll may be a better choice.