Simplest way is to pre-distort the image in Photoshop.  Most figures, be they clothes, people or whatever, will distort a regular image to a certain degree.  The trick is in learning where the distortions occur and correcting them beforehand.

For human models and some clothes, SnowSultan's seam guides are invaluable.  The best solution I can suggest for anything else is to make your own templates with UVMapper and customize them by painting guidelines over the area you want to add a logo to, then render that version to see how much distortion occurs.

Coppula eam se non posit acceptera jocularum.

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