This is the pattern that I came up with for my dresses,
I believe it's complete, if you have any questions about it, please let me know!!
I use Caron Simply soft yarn, although you could use whatever you like. I used 1 skein
for 0-3 months, I used an F hook and for the larger dress, I used a G hook.
Row 1 1dc in the 4th chain from hook (counts as 1st dc), dc in next 4 ch, *2dch, ch1, 2dc) in next ch (corner made) dc in next 13 chs; repeat from * 2 times more: (2dc, ch1, ch2) in next ch (corner made) dc in last 6 chs-67 dc and 4 corner ch1 spaces. Ch3 (counts as dc on next row now and through out)
Row 2 *dc in next dc and in each dc across to ch 1 sp, (2dc, ch 1, 2 dc) in first ch 1 sp. repeat from * 3 more times; dc in each remaining dc across, making corners (2dc, ch 1 2 dc) in each ch 1 space, 83 dc and 4 corner ch1 spaces.
Row 3-6 Repeat row 2, 4 times (5 times for larger size) more. At end of row 6- 147 dc and 4 ch 1 corner spaces. Ch3.
**note, work now progresses in ROUNDS
Round 7 *dc in next dc.and in each dc to next ch1 sp, Dc in ch1 space, turn work, dc in SAME ch1 space. Skipping all dc between ch1 space. Arm hole made!! repeat from * once more, creating 2nd armhole. Join with sl st in 3rd ch of beginning ch 3. DO NOT TURN!!
Round 1 CH4, counts as dc and ch1 space, skip next dc, *dc in next dc, ch 1 sk next dc: repeat from * around. dc in last dc. 38 de and 38 ch 1 spaces.
Round 2 beginning shell: ch 3, 2 dc 2ch 3 dc in next ch 1 space. sk next ch 1 sp, * 3 dc ch2 3 dc in ch1 sp. skip next ch1 space. repeat from * around. 19 shells. Join with sl in 3rd ch of beginning chain 4
Round 4 slp st in first 2 dc work beginning shell in ch2 sp. *shell in ch 2 of next shell. Repeat from *around.
Repeat for 3 10 times more.
Round 1 join with sl stitch to underarm. sc around, join with sl in same stitch as joining.
Round 2 (CH3, 2dc, ch2 3 dc) in same st as joining. *Sk next 3 sc. Shell in next sc, sk next 3 sc repeat from * all around.
Round 3 repeat round 2, fasten off after joining with sl stitch.
Repeat for 2nd Sleeve in other Arm.
For a closure on the back, you can use a ribbon and lace it through, you can use buttons, or crochet a chain and use it to tie the back shut. I have given these to people, and they have had their children wear if backwards, and it looks fantastic that way too.
If there are errors, let me know, I have never written my own pattern before. Thanks!!!