This v-neck, cap-sleeved, raglan t-shirt is crocheted in the round from the top-down. It’s seamless, and the top-down construction allows you to try it on as you go. The sweater is designed to be fitted and has a small amount of negative ease, therefore finished measurements should be exactly, or slightly less than your actual measurements. This is a template, not a pattern, and it allows you freedom as far as gauge and stitch pattern go. For more about how this sweater is constructed, check out the article [2] about it. And to connect with other crocheters who are making it, join the crochet-along [3].

Custom fit
Variable
Special Stitches:
FPdc – Front post double crochet
BPdc – Back post double crochet
An adequate gauge swatch is essential in this pattern—row gauge is actually not important, because the sweater grows from the top-down, but stitch gauge is. So create a swatch that’s at least 6 inches wide and 3 inches tall. When you’re swatching, you may want to try various needle sizes and stitch patterns to get a fabric that you like. Take your time. Most of the design process happens here. If you’re using a fuzzy yarn, I would recommend a simple stitch pattern—I think hdc works great. And don’t be afraid to use a needle larger than recommended because we want a flexible, not stiff fabric.
Measure your gauge. Make note of it here:
_____________ sts per in/cm.

Measure the back of your neck. Multiply this measurement by your gauge: ________ (A)
Divide the number above by 3: ______ (B) Multiply B by 2: ______ (C) (here we’re determining the number of stitches to chain for the sleeves.)
Add C + A: ________ (D)
Add D + 6: ________ (E) (The six stitches we added form the four raglan “seams” plus two stitches for the front of the sweater. E is the required number of stitches needed to begin your sweater, you’ll need to adjust this number, adding the required number stitches for the “turning chain.”)
(Replace the letters with the numbers you got in your calculations.)
Using the yarn and hook you’ve selected, chain E. Place markers at the seam stitches so you’ll know where to increase in the first row. Skip the first stitch, place a marker at the 2nd stitch, skip B stitches, place a marker at the next stitch, skip A stitches, place a marker at the next stitch, skip B stitches, you should be right before the second to last stitch. Place a marker in the second to last stitch - 4 markers placed.
Note: I used double crochet in the template as an example, but you should feel free to use any stitch or stitch pattern.

Row 1: Ch 3 (counts as dc), dc in 4th ch from hk, 3 dc in next st (where marker was placed), dc in each st to 2nd marker, 3 dc in marker st, dc in each st to 3rd marker, 3 dc in marker st, dc in each st to 4th marker, 3 dc in marker st, 2 dc in final st - 10 sts added.
Row 2: Ch 3 (counts as 1st dc), turn, dc in same st as t-ch, *dc in each st to next 3-dc shell, dc in 1st st of shell, 3 dc in 2nd st of shell, dc in 3rd st of shell, * rep from * to * across until 4 dc shells have been worked, dc in each st to last st, 2 dc in last st (top ch of t-ch) - 10 sts added.
Rep Row 2, until the number of stitches at the back is equal to the number of stitches for the two fronts when added together (plus or minus one stitch is ok). In my model, this took a total of 5 rows.
At the end of the final neck shaping row, ch 1, sl st to join to beg of round to form center V. From now on you will be working in continuous (spiraling) rounds. The center point of the V marks beg/end of each round.
Rnd 1: Ch 3 (counts as 1st dc), sk 1st st, *dc in each st to next 3-dc shell, dc in 1st st of shell, 3 dc in 2nd st of shell, dc in 3rd st of shell, * rep from * to * around until 4 dc shells have been worked, dc in each st to end of the round. Do not join. - 8 sts added.
Rnd 2: *Dc in each st to next 3-dc shell, dc in 1st st of shell, 3 dc in 2nd st of shell, dc in 3rd st of shell, * rep from * to * around until 4 dc shells have been worked, dc in each st to end of round. Do not join - 8 sts added.
Continue as in Rnd 2, adding 8 stitches per round until you can comfortably wrap the sleeve cap around the widest part of your arm. (Make sure you stop to try the top on every few rounds.)
Next Rnd: *Dc in each st to next 3-dc shell, dc in 1st st of shell, 3 dc in 2nd st of shell, dc in 3rd st of shell, ch 2, sk all sts up to next 3-dc shell, dc in 1st st of shell, 3 dc in 2nd st of shell, dc in 3rd st of shell, * rep from * to * once, dc in each st to end of round. Do not join - cap-sleeves formed.
Rnd 1: Dc in each st of the round.
Rnd 2: Dc in each st to 1st underarm, dc2tog twice, dc in each st to 2nd underarm, dc2tog twice, dc in each st to end of round.
Rep Rnd 1 of Bodice until sweater falls just above your hip (or reaches the length you’d like before the ribbing. If you wish, you can change to a smaller hook size just after the sweater falls below the bust to add some shaping.)
Rnd 1: *FPdc in the first st, BPdc in next st, * rep from * to * around to create ribbing. Do not join.
Rnd 2: Rep Rnd 1 of Ribbing, working FPdc around FPdc sts and BPdc around BPdc sts until you have 2 inches of ribbing (or the length you desire).
Fasten off.
With smaller hook, join yarn at 1st underarm and work 3 rounds of FPdc/BPdc ribbing around cap sleeve. Sl st in next st. Fasten off. Repeat for 2nd sleeve. (Note: if you’d like longer sleeves, you can work plain dc rows before beginning the ribbing.)
With smaller hook and RS facing, join yarn at the center back of the neck opening, work 1 round of sc around neck opening, sl st in first sc to join. Fasten off.
Weave in all ends.
Links:
[1] http://www.musephotostudio.com
[2] http://crochetme.com/stitching-up-your-favorite-sweater
[3] http://crochetme.com/blog/amy
[4] http://www.besweetproducts.com/product_type.php?cat=1&prod=5
[5] http://straw.com/cpy/yarns/meringue_card.html
[6] http://creativecommons.org/licenses/by-nc-sa/3.0/
[7] http://creativecommons.org/licenses/by-nc-sa/3.0/