aritzia is very selective of the people they hire. they don't hire people with less than one year retail experience (except in some cases it might be different).
if you don't have retail experience, it'd realistic to tell you to not aim too high. after all you might apply to all those places and not getting hired at any. i have more than 1 yr retail experience but still some companies won't hire me =)

getting a job is not easy. and i think u learn best by going to applying to various companies out there instead of believing that they will hire you as long as you apply....the reality is cruel.