Navy pullover

Navy solid sweatshirt- size up for an oversized look. I’m in the large here. (My daughters wear 2 and 4 and love the small- could be good for your pre-teen/teen!)
Comfy and a great basic.

Regular fit:
Small- 2/4
Medium- 6ish

For an oversized look:
Small- best for 0/2
Medium- best for 4/6