Kiki Byrne photographed while concealing her pregnancy. Although Byrne described her clothes as "exclusive clothes – at reasonable prices", Barbara Hulanicki, who went on to launch the original "Biba" boutique, remembered that one of Byrne's black dresses cost 20 guineas, which she thought quite expensive. Hulanicki would later recall how excited she and her friends were to discover Byrne designing the kind of nice, simple, youthful garments that they wanted to wear, but had difficulty finding. Byrne's designs, along with those of Foale & Tuffin, Sonia Rykiel, Quant, and Biba, were worn by the famously trendy Cathy McGowan on her influential music
Biba Model Bell–LaPadula model. In general, preservation of data "integrity" has three goals: This security model is directed toward data "integrity" (rather than "confidentiality") and is characterized by the phrase: "read up, write down". This is in contrast to the Bell-LaPadula model which is characterized by the phrase "read down, write up". In the Biba model, users can only "create content at or below" their own integrity level (a monk may write a prayer book that can be read by commoners, but not one to be read by a high priest). Conversely, users can only "view content at or above" their own