I'm confused. I'm looking to purchase a Burberry trench, but the Burberry store in San Francisco told me they do not make petite sizes. However I have seen them online like at Nordstroms, but of course they do not have my size. Is the petite line only available at Nordstroms? I know I can get them fitted and taken it at Burberry, but if they make them petite beforehand I'd like to get a petite one. Any suggestions?