The Showered in Rainbows Baby Sweater is now available for individual sale! To celebrate, you can get this pattern for 40% OFF until February 28, 2026 (11:59 ET). No coupon code needed.

You can also get this pattern as part of my book, Knit Happy with Self-Striping Yarn.

Whenever a baby shower invitation lands in my mailbox, my first thought is always the same: It’s time to knit a baby sweater!

The Showered in Rainbows baby sweater was specifically designed to work magic with your self-striping yarn. This ONE SKEIN project is perfect for creating a gift-worthy garment with a single, special skein in your stash. Plus, the unusual construction creates shorter rows. Fewer stitches per row means those stripes really shine (especially if your yarn has narrow stripes).

AND if your yarn stash is more “rainbow leftovers” than pristine skeins, this sweater has you covered. It’s perfect for using up scrap yarn, mixing colors, and turning those too-small-to-be-useful bits into something joyful and gift-worthy.

So go ahead—shower that baby in rainbows!

SIZES
Newborn (0–3mos, 3–6mos, 6–12mos, 18mos, 2T)

YARN
FINGERING weight yarn

240 (280, 320, 360, 400, 440) yards / 220 (256, 293, 330, 366, 403) meters

Sample One
Must Stash Yarn PERFECT SOCK (75% superwash merino & 25% nylon, 460 yards / 3.5 oz 420 meters / 100 grams)
Shown in “Komorebi”

Sample Two
Kirby Wirby SOFT & SQUISHY (75% superwash merino & 25% nylon, 440 yards / 3.5 oz 402 meters / 100 grams)
Shown in “Blurple”

FINISHED DIMENSIONS
Chest: 17 (18.25, 19.25, 20.25, 21, 23.25) inches / 42.5 (45.5, 48, 50.5, 52.5, 58) cm
Sleeve Circumference: 6 (6.5, 7, 7.5, 8, 8.5) inches / 15 (16.5, 17.5, 19, 20.5, 21.5) cm

NEEDLES
GAUGE NEEDLES
US 4 (3.5 mm) or as required to meet gauge circular needles and DPNs or preferred needle size for small circumference knitting

RIBBING NEEDLES
US 3 (3.25 mm) circular needles and DPNs or preferred needle size for small circumference knitting

GAUGE
24 stitches and 32 rounds = 4 inches (10 cm) in stockinette stitch on LARGER needles after blocking

TOOLS
3 ½-inch (1.25-cm) buttons, Stitch marker, Scissors, Tapestry needle, Scrap yarn, Tape measure

BOOK ERRATA
p.149 NEEDLES (column 1)
SMALLER NEEDLES should be listed as US 3 (3.25 mm) 32-inch (80-cm) circular needles

Many, many thanks to my incredible SIL for taking these photos. AND, many tiny smooches to my niece for being, well, her awesome self (in a tiny sweater).