A style that is slightly longer than the chin, shaped and softened around the edges, flatters a square face. This gives the illusion of length to your face. Hair should not be cut shorter than, or in line with the chin, as this would make the face appear squarer. Avoid center partings and straight bangs. For someone with a heart shaped face balance between the forehead and chin is very important. Layered hair shaped along the face near the chin, thick at the bottom and with layered bangs will provide fullness where needed. Straight styles, which cling to the face, would accentuate the narrow jaw line and is not recommended.
Blunt cuts at the end of short hair are not suggested and one should also take care that curly, short hair may not look very flattering either. Some celebrities with round faces who had great_looking short hair and looked gorgeous include Catherine Zeta Jones, Kirsten Dunst, Michelle Williams, Cameron Diaz and Oprah Winfrey. Your best bet is to study the different hairstyles that would suit the face best, and it's certainly a good idea to do so before making to any trips to the salon. Dependable salons also offer consulting services that would direct one to the perfect hairstyle.