Bare legs, here's a little one with quite a cheeky pair of bloomers! Stockinette stitch takes you on a creative journey to craft this vintage-style knitted bloomers pattern using the soft, pure cotton yarn PHIL COTON 3. To make this pattern, you'll need: Needle no. 2.5. Needle no. 3. This intermediate level pattern is explained in the following sizes: newborn, 3 months, 6 months, 12 months, 18 months.