New with tags & packaging.

I believe this is a Kids 6, tag just says 'Size 6', check meausurements below:

Armpit to armpit flat across chest measures: 13"

Back of collar to back edge of hem measures: 17"

Gucci cotton-jersey T-shirt
Slips on
Round neck, short sleeves, graphic tiger print at front, straight hem
100% cotton
Hand wash