Model Lorelei Shark provided The Lips used for the promotional posters of The Rocky Horror Picture Show, which also included the tag-line A Different Set of Jaws. In The Rocky Horror Picture Show, The Lips are those of Patricia Quinn during the films opening number "Science Fiction, Double Feature". There are several official versions of The Lips that appear on almost all Officially Licensed Merchandise for ''The Rocky Horror Picture Show''. The concept the movie's opening sequence came from production designer Brian Thomson, who based the disembodied lips on the Man Ray painting "Lips over Hollywood".
in 1973, The Royal Court Theatre presented "Not I", a short monologue written by Samuel Beckett and performed by Billie Whitelaw. Whitelaw's entire body was draped in black; her face covered with black gauze with a black transparent slip for her eyes and her head was clamped between two pieces of sponge rubber so that her mouth would remain fixed in the spotlight. Finally a bar was fixed which she could cling to and on to which she could direct her tension. The visual result, although small on stage, was the same look as "Science Fiction, Double Feature," and undoubtedly served as inspiration regardless of the Man Ray reference.
Different sets of Lips:
Line Art version of The Lips from 1978 advertising for first issue of The Rocky Horror Picture Show Original Soundtrack Album
Video of Samuel Beckett's "Not I" on stage at The Royal Court Theatre, 1973