I agree with the previous comments. There is a perceived "glamour' associated with the airline industry and most airlines expect their crew to adhere to gromming regulations in one way or another. I know BA have no stipulation regarding girls wearing make-up but Virgin is slightly different... in a good way of course! Girls are required to wear their uniforms in a certain way but isn't that all part of working at Virgin... we are glam! Pop on that red lippy and show BA how it should be done!
PS. I couldn't swim a stroke before I got the job but quickly learnt... go for it!