求翻译：1997年Burberry扩大了产品服务范围，进一步扩大客人网路，主要向皇室和年纪较长的名人提供服饰变化成为服务于多个层面的客人，这种变动的原因来自于管理阶层的变动，现任CEORose Marie Bravo的加盟。是什么意思？

1997 Burberry expanded the range of products and services to further expand the guest network, mainly to provide the royalty and celebrities of the older costume changes as a service in many dimensions of guests, the reason for this change comes from changes in the management of, the incumbent CEORose Marie Bravo joined.