Learner's definition of FASHIONABLE
[more fashionable; most fashionable]
fashionable clothes [=clothes that are popular; clothes that are in fashion]
She wore a sleek black dress and fashionable [=stylish] shoes.
a fashionable café
It isn't fashionable to express such an opinion these days.
dressing and acting in a way that is currently popular
She was fashionably dressed, as usual.
He arrived at the party fashionably late. [=he arrived at the party slightly late, which is the fashionable thing to do]