Well well well! This beret is super cute! We haven't had a proper traditional beret like this in a long while! The tunic as well, matches up so well for that French/artiste look which I know every child and tweenager is aiming to look like. Haha. The cardi on the back is interesting too, like the tunic it's knitted side to side in garter stitch which breaks up the beautiful tones in the Jitterbug in such an unusual way. Should be a pretty simple make.
You'll need some Jitterbug, some 4.5mm needles for the top and cardigan and some 3.75mm and 4mm for the beret. You'll also need 4, (4, 5, 5, 5) buttons for the cardi.