Green’s Dictionary of Slang

a state of undress.

1889		Richmond Dispatch (VA) 13 Oct. 6/4: The goats meetin’ em at the fut [of a slide] an’ buttin’ ’em over until a shtate of igshthrame dishybilly, it’d med ye laugh.
1898		J.M. Lippmann Dorothy Day 202: That is, unless you're busy or mind seeing me in ‘dishy-billy’.
1922		Joyce Ulysses 404: Know his dona? Yup, sartin, I do. Full of a dure. See her in her dishybilly.
1940		D.L. Murray Tale of Three Cities 157: He didn't ought to see you in your dishy-billy like this!