I haven't made it yet, but this is one of my favorite patterns.
Monster Bum Longies Yarn: Any yarn for 4mm needles, 100m - 50g. 2 skeins of base color (BC), 1 skein of each stripe color (C2/C3), about 25m red, a bit of white, and a bit of black. Gauge: 20 stitches = 10cm.
Knit owl jacket personalized baby sweater pink owl by Tuttolv