Inspired by these designs, but I’m not actually following any of them but making the tee on my own.

Instructions:
CO 90 sts.

1. 10 rows in Garter st - in the last one: p3, m1 purled.
2. kfb all sts
3. 8 rows in St st
4. ssk all sts
5. 6 rows in Garter sts - in the last one: p3, m1… repeat 2-5 twice = 209sts.
6. 6 rows of Garter sts
7. divide for armholes: 66sts for front and back (dec 1 st in the back), 38sts BO for armholes. In the next row pick up 14 sts under each arm.
8. plain St st
9. ruffle: kfb all sts, k one round, BO knitwise.
10. crochet edging (sc) for underarm.

Measurements to fit an 10-year-old with 1 inch positive ease.
Chest: ~73cm
Length: ~45cm
Armhole: ~25cm

I didn’t manipulate with striping and joined the skeins as I went, because I didn’t know if I’d have enough yarn. The yoke itself used over one skein. = I used all the yarn from my stash. Perfect!

I love how it turned out, this yarn is perfect for this project, light, airy, colorful (the pics don’t do any justice - the colors are more pastel in reality).
Think I might make one for me too, but not stripey ;-)

It came out a little too big, but just slightly, which is actually OK, as she might enjoy it longer. And she loves it. YAY! I think this color is so flattering paired with her complexion.