For a ladies 8 in Europe is 42 and in us is 10.5
This is the full information about shoes size look the link below:
http://www.dancesport.UK.com/shoes/conchart.htm
European shoe size for Men = size 40 UK size 7 European shoe size for Ladies = size 40.5 UK size 7
A UK 11.5 shoe is equal to a US 12.
A UK 11.5 shoe is equal to a US 12.
6½
UK 4.5
6.5
8.5 U.S.
UK Size 5 = US Size 7 = EU Size 38.
Specifically, it equates to a 10.5 shoe in the UK.
European size 42 is the same as a UK size 8.
Shoe size 3 in the UK is equivalent to shoe size 5.5 in the USA, 35,5 in Europe and 22,5 in Japan for Ladies shoe sizes. For Boys size 3 in the UK is equivalent to size 3.5 in the USA, 35,5 in Europe and 21,5 in Japan. Men and girls normally do not wear shoe size 3.
In Women's, US8 is equal to UK6 In Men's, US8 is equal to UK7 Hope this helps :)