While Warhol had started doing occasional commissioned portraits in the 1960s, by the 1970s it had become his main source of income and a relentless focus of his attention. To make these portraits he would take a Polaroid picture of the sitter which was then transferred to an enlarged silkscreen. Tracing simple outlines onto the canvas first, Warhol would underpaint the mouth and eye area so that when the silkscreen was applied on top those features would stand out. As always, it was his subject’s lips that interested Warhol the most, so much that in 1975 — always the avid bookmaker — Warhol created three different unique albums printing and/or collaging images of more than 60 different pairs of lips onto the album pages. Andy Warhol: Lips showcases twenty-five works from one of these books.