S means small, which translates roughly to a women's size 4 to 6 in most brands.

Is a size 8 considered skinny?

In these regions, a woman wearing a size 8 to 10 is considered thin and appealing. Women who are in the 00 to 4 range might be seen as underweight. ... African-American and Latino populations sometimes prefer women who are sizes 12 and up, but this also varies with income level and personal preferences.

Is 6T the same as 6?

6t should fit children whom are the size of a 6 year old. Generally, the “t” is for toddler and goes up to size 5t. Size 6 is considered “small kid”, but every company may have different sizing standards.