X, from Hockney's Alphabet, 1991 Contemporary Art This portfolio represents Twombly's exploration

This portfolio represents Twombly's exploration of the beauty and fragility of nature

Former fashion model Helen Dzo Dzo Kaptur (in white lace)

and numbered by the artist

Inspired by Andy Warhol's philosophy of artistic appreciation

with tiny stars incorporated as subtle elements that connect to Turrell's Quaker spiritual background and his concept of inner light

X, from Hockney's Alphabet, 1991 Contemporary Art This portfolio represents Twombly's explorationDavid Hockney's letter X comes from Hockney's Alphabet, the 1991 portfolio in which the artist reimagined all twenty six letters as full page colour lithographs. A white three dimensional X, its faces ruled with fine hatching, crosses the centre of the sheet over a hexagon of colour red and pink lattice above, deep green and royal blue below the solid letter floating against flat planes. Hockney's Alphabet was conceived by the poet Sir Stephen Spender