Midsize simply refers to the range of clothing sizes that sit between typical straight sizes and plus sizes. Straight sizes are generally considered to be 0 to 8, and plus sizes are conventionally known as 16 and up. That would put the midsize range from 10 to 14.
A basic definition of what sizes are considered mid-size are those from a US size 10-16. They're the sizes that walk the line between “standard” and “plus” size ranges.
Some stores will consider a medium to be a size 10, while others a size 12-14. As an average, a Medium is likely to be a around a size 12. Generally a Small will be an AU 8-10 and a Large an AU 14-16. An Extra Small is likely to be a size 6, with an Extra Large likely to be a size 18.
Plus-size clothing is generally considered a women's size 18 and beyond. “Missy” or “straight” sizes range from 00–16/18, XXS–XXL whereas plus sizes range from 12W–28W, 0X–4X and greater. You might think plus sizes are just extended straight sizes, but guess again.
According to PLUS Model magazine, "In the fashion industry, plus size is identified as sizes 18 and over, or sizes 1X-6X and extended size as 7X and up". The article continues "Susan Barone [...] shared, 'Plus sizes are sizes 14W – 24W. Super sizes and extended sizes are used interchangeably for sizes 26W and above.
“Plus-size” is defined as any size above 18. Despite plus-sized people being the majority in Australia, clothing that is not plus-sized, also referred to as “straight” sized, is considered the standard.
The girls' equivalent of plus-size fashion was called “Chubby” from the 1950s to the 1970s. “Chubby Clubs” were organized throughout the country to give girls of size a sense of community. Decades later, “chubby” is still a term sometimes used to describe larger body types.
What dress size is a 'Medium'? This varies from brand to brand and by country. Some stores will consider a medium to be a size 10, while others a size 12-14. As an average, a Medium is likely to be a around a size 12.
"A size 12 used to be quite svelte and not overweight but, nowadays, someone who is a size 12 is highly likely to be overweight," the Public Health Association of Australia told the Herald Sun.
Clothing stores can make it difficult to put a number on plus-size. Some departments may designate a size 12 as plus-size while others use a size 14. But according to Modeling Wisdom, plus-size models often fall into the range of sizes 8 to 12. Sometimes, even a size 6 can be considered.
In 2011-12, the average Australian man (18 years and over) was 175.6 cm tall and weighed 85.9 kg. The average Australian woman was 161.8 cm tall and weighed 71.1 kg. On average, Australians are growing taller and heavier over time.
A full-size car is any sedan that is larger than a mid-size. If it has over 120 cubic feet of combined volume, it will fall into the full-size category.
Adult Body Mass Index
If your BMI is less than 18.5, it falls within the underweight range. If your BMI is 18.5 to <25, it falls within the healthy weight range. If your BMI is 25.0 to <30, it falls within the overweight range. If your BMI is 30.0 or higher, it falls within the obesity range.
US size 12–14 is usually considered “Large” and some brands do start “plus sizes” at 12.
In standard women's clothing sizes, Size 10 is considered “Medium”. A woman who is 4′ 10″ or less and wears size 10 Petite clothing would likely be considered overweight.
So if you're a 10 in Australia, you're a 6 in the US.
If majority rules, a size 10 has a 36″ bust, 28″ waist and a 40″ hip. She's five foot five or six inches tall and weighs 140 pounds.