Traditionally, what body type was considered idea in the different cultures?

Re: Traditionally, what body type was considered idea in the different cultures?

^ From my understanding the conversion between UK sizes and American sizes is the following:
UK 4 = US 0
UK 6 = US 2
UK 8 = US 4
UK 10 = US 6
UK 12 = US 8
UK 14 = US 10
UK 16 = US 12
UK 18 = US 14

These refer to waist and hip size.