Be sure to have a copy of the Bootstrap stylesheet available on your
application, you can get it on http:/%rtwitter.github.com/bootstrap.

Inside your views, use the 'simple_form_for' with one of the Bootstrap form
classes, '.form-horizontal', '.form-inline', '.form-search' or
'.form-vertical', as the following:

  = simple_form_for(@user, :html => {:class => 'form-horizontal' }) do |form|