Top Down Crossover Cardigan for ages 2/4/6/8/10 & 12 years

4/4/5/5/6/7 balls of Cheval Blanc Tobiane (100m/109yds - 50g)
4mm (US 6) needles & circular needle
4mm (US G-6 ) crochet hook
8 stitch markers
2 stitch holders
Tension/gauge in Stocking/Stockinette st (St st): 20sts x 30 rows = 10 x 10 cm or 4” x 4”