Definition of «casual ensemble»

"Casual ensemble" refers to a relaxed and informal combination of clothing items or a complete outfit.

Similarly, I can wear my skirt with a sweater and tights for a more casual ensemble. (madame-ostrich.com)
For a fun yet casual ensemble for class, start with a striped sweater dress in your favorite color. (collegefashion.net)
It adds a touch of polish to an otherwise casual ensemble. (sabbystyle.com)
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