beautiful cake when you find out can you pm me how to do it as well!!
Does he want it in buttercream or fondant?
Just by reading threads around here, apparently Edna has a buttercream pleat tutorial in one of the latest issues of the CC magazine?
Maybe you can start with a search on that and also on pleating fondant. I am just assuming that is the question you have on where to begin!
I can't tell for sure, but those may be individual pleats, not one big pleat. I am pretty sure there was just a discussion on a very similar cake here recently.
It looks like fondant to me and as here in the UK very rarely use just bc for icing cakes i'd be more inclined to do the pleats in fondant. I mix the fondant with a little flower paste so that it gives it a bit more stretch without breaking for doing pleats. I'm wondering if a whole piece of fondant is draped over first and teased into pleats rather than a layer of fondant underneath then the pleats put on separately?
I blew up the pic. As it get bigger, it loses clarity but........
I agree w/dchockeyguy. The slightly pleated fondant covered cake tiers are placed on a cake plate no more than 1" larger than the cake - probably the same size and then flowers are placed between the tiers. Most likely the space between the tiers is no more than 2" which would be just a nice sized rose (or similar flower) to fit into.
.......whole piece of fondant is draped over first and teased into pleats....
Yes, that's what I see. OR the cake may have fat lines (open coupler/no tip) lines of b'cream then the fondant placed over it. I've done that for doll skirts and pumpkins 
There is another forum on this exact same cake, maybe it will help....or maybe you can PM to OP on that one and see if she did it.... HTH
http://cakecentral.com/cake-decorating-ftopicp-6888732-.html#6888732
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