Hélène
This pattern is available on Ravelry(goes to new website)(opens in a new tab).
yarnsparrow / sans 200 5 (5, 6, 7, 7, 8) skeins
needles
one 29” circ needle in size US 4 (3.5 mm) one 16” circ in size US 4 (3.5 mm) one extra needle in size US 4 (3.5 mm) for bind-off