The first one fits! I think he needs a hoodie, too…

Cast on 48, knit 1 round.
Knit 5 more rounds, with a 1x1rib over the center front only (16 sts), with the rest in st st.
Work increases to 76 sts, while working colorwork “bones.”
After increases, starting on round 29:
K7, bind off 11, k to last 17sts, bind off 11, k7;
K7, cast on 11, k to gap, cast on 11, k7. Leg openings made.
Continue in st st for 15 rounds before binding off 20 belly stitches. Continue, knitting flat for 2 rows, then working mirrored decreases on right side rows until 36 stitches remain.
Knit one round, picking up side and belly sts, knitting 10 rounds ribbing, decreasing at inside corners every other round.
Sleeves on 24 sts for 15 rounds, bind off.
Pick up hood sts, leaving a neck opening of 10-14sts.
Knit st st, increasing 2sts at center back, every right side row, 5x. Continue in st st to xx inches, Kitchener closed.