Wiktionary
a. Extremely fashionable.
Usage examples of "ultrafashionable".
They were ultrafashionable in dress, and, though no one could deny the richness of their decorations, yet their appropriateness might be questioned amidst the simplicity of a country church.
Gordon Square, he saw a small knot of ragamuffins clustered near a house that likely belonged to a wealthy merchant, as this was still east of the ultrafashionable Mayfair area.
Their jewels, their ultrafashionable dress, their eye-catching coiffures had all been designed as advertisements to attract general attention.
Grosvenor Square, which was itself just east of the ultrafashionable Hyde Park in Mayfair.
I drew suntanned young giants in white dinner jackets, seated at white tables alongside turquoise swimming pools, toasting each other, rather excitedly, with highballs made from a cheap but ostensibly ultrafashionable brand of rye whisky.