This is an advanced beginner level that uses US terminology and is only in English.
The pattern is a made to measure and size inclusive design, this means you take your own measurements before starting the pattern. This means it can be made for any age and size.
You will need any type of sport weight cotton yarn and a 3.5mm crochet hook. I used roughly 600m for the sample size (UK 8) top and roughly 1200m for the sample size (UK 8) dress.
You can use DK weight yarn if you prefer, just make sure to go up a hook size.