Skirt:
Ch 79.
R1: Sc in second ch from hook, [skip next 2 ch, 5 dc in next ch, skip next 2 ch, sc in next ch] 12 times, skip next 2 ch, 5dc in next ch, skip next 2 ch, join to first sc (13 sc, 65 dc).
R2: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 12 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (13 sc, 65 dc).
R3: Ch 2, [hdc in next 11 st, inv dec] 6 times, sl st in first hdc (72 hdc).
R4: Ch 1, [sc in first st, skip next 2 st, 5 dc in next st, skip next 2 st] 12 times, sl st in first sc (12 sc, 60 dc).
R5: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 11 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (12 sc, 60 dc).
R6: Ch 2, [hdc in next 10 st, inv dec] 6 times, sl st in first hdc (66 hdc).
R7: Ch 1, [sc in first st, skip next 2 st, 5 dc in next st, skip next 2 st] 11 times, sl st in first sc (11 sc, 55 dc).
R5: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 10 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (11 sc, 55 dc).
R7: Ch 2, [hdc in next 9 st, inv dec] 6 times, sl st in first hdc (60 hdc).
R8: Ch 1, [sc in first st, skip next 2 st, 5 dc in next st, skip next 2 st] 10 times, sl st in first sc (10 sc, 50 dc).
R9: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 9 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (10 sc, 50 dc).
R10: Ch 2, [hdc in next 8 st, inv dec] 6 times, sl st in first hdc (54 hdc).
R11: Ch 1, [sc in first st, skip next 2 st, 5 dc in next st, skip next 2 st] 9 times, sl st in first sc (9 sc, 45 dc).
R12: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 8 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (9 sc, 45 dc).
R13: Ch 2, [hdc in next 7 st, inv dec] 6 times, sl st in first hdc (48 hdc).
R14: Ch 1, [sc in first st, skip next 2 st, 5 dc in next st, skip next 2 st] 8 times, sl st in first sc (8 sc, 40 dc).
R15: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 7 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (8 sc, 40 dc).
R16: Ch 2, [hdc in next 6 st, inv dec] 6 times, sl st in first hdc (42 hdc).
R17: Ch 1, [sc in first st, skip next 2 st, 5 dc in next st, skip next 2 st] 7 times, sl st in first sc (7 sc, 35 dc).
R18: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 6 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (7 sc, 35 dc).
R19: Ch 2, [hdc in next 5 st, inv dec] 6 times, sl st in first hdc (36 hdc).
R20: Ch 1, [sc in first st, skip next 2 st, 5 dc in next st, skip next 2 st] 6 times, sl st in first sc (6 sc, 30 dc).
R21: Ch 3 (counts as first dc), 4 dc in same st, [skip next 2 st, sc in middle dc of shell, skip next 2 st, 5 dc in next sc] 5 times, skip next 2 st, sc in middle dc of shell, skip next 2 st, sl st in third ch (6 sc, 30 dc).
R22: Ch 2, hdc in front loop of each st around, sl st in first hdc (36 hdc).
R23: Ch 1, sc in back loop of each st around, sl st in first sc (36 sc).