Market research into the 'Bra' market sector

I need some specific research into the BRA market (Clothing)

I am putting together a mini business plan for fund raising

For this I need to

1) collect data for the market size of bra’s. (GLOBAL) in £s

2) Also some indication by price of the different levels in the market eg PREMIUM and GENERAL

3) What is the size of the PREMIUM bra market and what % of the Bra market is this ?

(for example i want to be able to show that if we select the top x% by price we are only going for [y]% of the whole market sector). We want the proposal to look professional and well thought out.

To give an idea of whats needed we have done the same for the CHINO trouser market
Chino example

If this were an exercise for say men’s chinos then I know that the biggest part of the market sells at £29.50 but we would be targeting the market selling at say £40 plus – this would only be say 10% of the market, but big enough for our purposes. So we want to establish the volume of the premium bra market.

This should all be straight forward if you know where to look

Many thanks