Handbag skins

I've noticed that a substantial part of the time spent waiting for the female of the species to 'get ready' for an evening out involves the selection of a handbag to match the ensemble and the transfer of a subset of the daytime handbag contents to the (smaller) evening handbag. The following morning, of course, these same contents must be moved again into that day's daytime handbag, and the process repeated in the evening.
Two simple innovations would eliminate this time-wasting exercise.
First, modular handbags. Start with, say, five standard sizes, so 1 is the ultra-minimalist 'knickers and cab-fare' size, size 2 is house keys, cell phone, and purse, size 3 adds tissues, make-up and vomit-bag, and so on up the the 'kitchen sink' model. Each module can be attached to the others with Velcro (TM), so for a size 4 occasion you simply attach the 4, 3, 2, and 1 modules together. This would eliminate all of the fiddly transferring of stuff from one bag to another.
The resulting bag modules can then be decorated to suit the ensemble by attaching the appropriate 'skin', which would be available in each of the standard sizes, and in whatever colours are deemed to be fashionable this season. A full range of handbags can thus be simulated just by having five sizes of 'skin', in each of say five colours, and the basic five modules, a huge saving.
(Note for USians: handbag = purse, purse = coin-purse)