size            waist       length

X-Small      12"-15"        6 "    new borns
Small         15"-17"       8"       infant to 1 year
Medium      18" -20"     10"      2 to 3 years 
 Large        20" -22 "     12"     4 to 6 years
X-Large      23" -25"     12"      7 to 9 years         

The best way to make sure you have the  perfect size for the tutus is to measure your little ones waist.  All tutus have an elastic band.  

Tutu dresses

Size                    Lenght   

X-Small              15"                   
Small                 17"
Medium             21"
Large                28"
X-Large            33"

Please note that measuring your little one is the best way to have the right
       See intructions below

To measure little one for a tutu dress.

1. Measure your little ones breast line. the complete circumference

2. Measure your little one from the arm pit  down to her ankle.