I supposed you are considering two adjectives that are both opinions.
Hence, it will not matter whichever order you use.
She is a wonderful, beautiful girl.
Some grammar books dictate the use of commas between each adjectives that have come to be redundant in the modern context.
However, for the sake of simplicity, it might be wise to choose only one adjective to fit the context. Short and succinct.
If the adjectives come in the form of an adjective pair, eg. "short and fat" it is best to follow the communal decision.
Hope this clarifies things.