dowdy
Definitions
Unfashionable and lacking in style or elegance.
Shabby, dull, or lacking in smartness in appearance.
Examples
She felt self-conscious in her dowdy brown dress at the glamorous gala.
The interior of the hotel was rather dowdy, with faded curtains and worn-out carpets.
He tried to modernize his dowdy wardrobe by purchasing a few stylish jackets.