3/4T Baby Blue Floral Bikini

Baby Blue Floral Bikini 2 small minor stains on top as shown Ruffle accents Tag says size 5-6 but I find to be very untrue, my daughter was wearing size 3T and some 4T at the time she wore this (last summer). She now wears 5T and it doesn’t fit, so I am labelling it as a 3/4 T