I'm not familiar with this brand, but I see that there is a conversion given on the product page. Does this help?
Juniors' to women's: 0=24, 1=25, 3=26, 5=27, 7=28, 9=29, 11=30, 13=31, 15=32
I have found that juniors' sizing seems to run a little narrower through the hips than misses', so I might start with the larger of your two sizes if you are curvier.