impeccably

Used to describe a person who is perfectly neat and smart in appearance.

非の打ちどころなく着こなす

To wear clothes that are extremely smart, stylish, and perfectly put together.

非常におしゃれで、スタイリッシュで、完璧にまとめられた服を着ること。

To act in a way that is perfect and without any fault, often in a social situation.