Green’s Dictionary of Slang

female breasts; occas. in sing.

1928		M.C. Sharpe Chicago May: Her Story in Hamilton (1952) 132: Brace and bits – breasts.
1935		A.J. Pollock Und. Speaks.
1963		(con. 1944) L. Glassop Rats in New Guinea 178: Do ya reckon Eunice had the best brace an’ bits, the most pervy tit for tats?
1977		(con. 1941) R. Beilby Gunner 286: ‘Gawd,’ Slim whispered hungeringly. ‘Get the brace and bits on her, will you!’.
1983		R. Aven-Bray Ridgey-Didge Oz Jack Lang 7: ‘What is the ask?’ he said as he lamped her pointed brace and bits poking out from the skimpy dicky dirt showing her bare comic cuts.
1990		Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Brace and bit. 2. Female breast.
1996		(con. 1964-65) B. Thorpe Sex and Thugs and Rock ’n’ Roll 11: ‘Her bracens ’ve got a hard-on for you, my son, no wuckin’ furries. I got the drum’ [ibid.] 15: She was every bit as beautiful as the big German girl and so were her brace ’n’ bits.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 28/2: braces and bits n. pl. a woman’s breasts.