Both Mavrick and Sienna were/are pretty big babies (in the 90 percentile) so obviously they wear clothes that doesn't suit their age.

Mavrick is 2.5 and wears 3T and size 9 shoes.
Sienna is 6 months and wears size 12 months but has tiny feet. Size 3 are too big, and size 2 too small.

Does your LO wear their age?