All Sure-Grip skates come in US Mens sizes. The following is the best way I have found to size Sure-Grip skates
In a standing position and on a flat surface place your heel against a wall and take a ruler or tape measure and lay it next to your foot. Measure from your longest toe to your heel. It is best to do this measurement with both feet in case one foot may be slightly longer than the other.
Then print out the Sure-Grip insole size chart.
You must first make sure that the document has printed correctly. To do this, be sure to "page Scaling" is set to NONE in your print settings.
Once printed out measure from the heel of the size chart with a ruler the measurement from step above. This should be your Sure-Grip size.
From experience most girls take the same size as their S.A shoe size.