For everyone who's got questions on the 24" length being too long, here's my take on it.

I'm 5'10 - 5'11" (depending on hair gel )My legs are a tad on the short side but my torso is slightly long. If I neal on the floor and slide the kilt up until I have about 1" clearance between the floor and the selvedge, the top of the kilt rides about 1/2" above my naval.

It would seem to me that unless you prefer to wear the kilt below the belly and are as short as 5'10", you should be able to handle a 24" kilt.