Size zero or size 0 is a women's clothing size in the US catalog sizes system. Size 0 and 00 were invented due to increasing body sizes and therefore the changing of clothing sizes over time (referred to as vanity sizing or size inflation), which has caused the adoption of lower numbers. For example, a 2011 size 0 is equivalent to a 2001 size 2,[1] and is larger than a 1970 size 6 or 1958 size 8.[2][3] Modern size 0 clothing, depending on brand and style, fits measurements of chest-stomach-hips from 30-22-32 inches (76-56-81 cm) to 33-25-35 inches (84-64-89 cm).[citation needed] Size 00 can be anywhere from 0.5 to 2 inches (1 to 5 cm) smaller than size 0.[4][5] Size zero often refers to thin people (especially women and adolescent girls), or trends associated with them.