Surely with the clothes budget that sees everyone else looking nice (apart from Louis Walsh who couldn't look stylish for - they could either -
get a tailor who can read a tape measure and make him a suit that actually fits, and find some shirts that don't look like car-boot knock-offs from an end-of-range sale, or
if he is wearing off-the-peg suits, take someone along with him when he buys them who knows the difference between 'close-fitting' and 'too tight'.
Finally, if his feet are as big as they look, get some trousers with a slightly looser leg, and buy some less attention-seeking footwear.