“Serendipity” 2pc set size 12/24 months with matching headband

Absolutely adorable and very comfortable and very soft set brand new. I just washed leggings because I thought we will wear this set for pictures. The tag still attached to tunic. The size on tunic says 24 months, and tag on leggings says 12 months. Not sure why because I bought it as a set at the mall. Perfect set for holiday season!