Not ancient Greece, but Suetonius' comment of Julius Caesar's dress sense (in The Twelve Caesars) might be of interest to you:

"His dress was, it seems, unusual: he had added wrist-length sleeves with fringes too his purple striped senatorial tunic, and the belt which he wore over it was never tightly fastened - hence Sulla's warning to the aristocratic party: 'Beware the boy with the loose clothes!'"

This appears to be fashionable, enough out of the traditional way to offend the aristocratic party; in the paragraph before this Suetonius also mentions:

"He was something of a dandy, always keeping his head carefully trimmed and shaved, and has been accused of having certain other parts of his body depilated with tweezers"

This may not be much but it is a start, Plutarch writing of Alcibiades of Athens says: "In the midst of all this display of political ability, eloquence, and statesmanlike prudence, he lived a life of great luxury, debauchery, and profuse expenditure, swaggering through the market-place with his long effeminate mantle trailing on the ground...and he carried a shield not emblazoned with the ancestral bearings of his family, but with a Cupid wielding a thunderbolt."

I suppose we may infer that long mantles which touched the ground where seen as luxurious and effeminate, and Alcibiades and his aristocratic companions with inclinations towards libertinism, dressed favouring beauty over utility.

In Marcus Aurelius's Meditations, it is written that due to his tutoring by Greek scholars, he followed certain Greek fashion trends.

The man allegedly preferred a thick woollen cloak instead of the finer fabrics afforded by the patrician classes of Rome. He also chose to sleep on a mattress close to the ground rather than an elevated bed-frame.

It is possible that the scorning of various luxuries and comforts might have been a necessity during his years on the Germanic frontiers, but it is also known that there were many schools of philosophy in Greece that took varying degrees of utilitarian lifestyles to heart. Cynics, Stoics and the like, in a simplified fashion, were the antithesis to hedonism.

However, there were the Epicureans who most certainly were very indulgent and materialistic, so it certainly shows the Greeks weren't as straight-forward as some other asymmetric interpretations of classical civilisations.

To make fun of the younger generation in The Wasps Aristophanes dresses Procleon in effeminate fancy clothing which consists of Persian garment and fashionable Spartan footwear. I mainly like this as it contradicts so many of our modern ideas regarding Sparta- that they exported high fashion shoes to young Athenian Aristocrats.