diaphanous, filmy, gauzy, gauze-like, gossamer, see-through, sheer, transparent, vaporous, vapourous, cobwebby (adj)

so thin as to transmit light

"a hat with a diaphanous veil"; "filmy wings of a moth"; "gauzy clouds of dandelion down"; "gossamer cobwebs"; "sheer silk stockings"; "transparent chiffon"; "vaporous silks"

gauzy (Adjective)

having the qualities of gauze; light, thin, transparent, hazy

gauzy (Adjective)

figuratively light, giving the effect of haze