Judging from a picture of her in a regular blouse and jacket, the uniform just looks too roomy for her frame.
http://www.gannett-cdn.com/-mm-/2aee9c2e7e1fe3dcce4928cce8d12075a46d6c32/c=17-0-303-215&r=x408&c=540x405/local/-/media/2015/09/16/Phoenix/Phoenix/635780403898809102-Oakland-Danielle-Outlaw.jpg
She should demand tailor made uniforms and bill the city.