Green’s Dictionary of Slang

a look in the eyes that invites the person on whom it is focused towards seduction.

1901		A. Binstead More Gal’s Gossip 42: Fannie was so mortified that great salt tears of indignation stood in her ‘big, brown, bedroom eyes’ — as Byron says.
1919		Aussie (France) 13 Apr. 4/1: Met a bonzer bint, with bed-room eyes, a figure like you see in shop windows; and as shy as a brumby. She told me all her history.
1939		R. Chandler ‘Trouble Is My Business’ in Spanish Blood (1946) 175: A redheaded number with bedroom eyes.
1949		N. Algren Man with the Golden Arm 82: It’s from flirtin’ [...] Me ’n my bedroom eyes.
1957		C. Himes Imabelle 96: [She] looked him straight in the eyes with her own glassy, speckled bedroom eyes.
1970		(con. 1950s) H. Junker ‘The Fifties’ in Eisen Age of Rock 2 (1970) 102: But mostly the eternal search for a little quiff, quim, [...] etc. Bedroom eyes. Hot lips.
1979		‘Iceberg Slim’ Airtight Willie and Me 35: It’s gonna take more than [...] your bedroom eyes to make that ’ho give you that lick.
1997		E. Little Another Day in Paradise 36: Got those bedroom blue eyes . . . you’re happening, Bobbie.
2010		F. Greene Flirting Bible 57: Bedroom eyes are irresistible and appealing any time of the day.
2018		‘Aidan Truhen’ Price You Pay 42: I have brown bedroom eyes that are swollen half shut.