Someone's garb is the clothes they are wearing, especially when these are unusual.
WRITTEN n-uncount oft in adj N, oft with poss
...a familiar figure in civilian garb..., He wore the garb of a scout, not a general.
Translation English Cobuild Collins Dictionary
1 apparel, array, attire, clothes, clothing, costume, dress, garment, gear (slang) habiliment, habit, outfit, raiment (archaic) robes, schmutter (slang) threads (slang) uniform, vestments, wear
2 cut, fashion, look, mode, style
3 appearance, aspect, attire, covering, guise, outward form
4 apparel, attire, clothe, cover, dress, rig out, robe
English Collins Dictionary - English synonyms & Thesaurus
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