From formpatternshop Etsy shop:
PDF sewing pattern for a oversized hoodie
Customizable sleeve and body length
DIFFICULTY : NOVICE
Measurements
Chest S - 21" M - 22" L - 23" XL - 24"
Centre back length S - 28" M - 29" L - 30" XL - 31"
Suggested fabric: Blended fleece