If you can see a sizing guide on the web sites that you are planning on making purchases from, that is most ideal, otherwise, I would call the sites customer service web site phone number and ask.
There is normally a difference in size between Juniors and Misses, Misses, is a tad bit larger in comparison, or should be anyway. A size 13 is Juniors, 14 is Misses, a 14 W would be a larger (supposedly) cut, and the W denotes Woman, anyway, if one fits normally into a misses 14, a 13 Junior might work, might not, for Junior sizing can be cut awfully small, that is why it is so important to see what the actuall measurements are for a particular size. Every manafacturer, has different patterns, and sizing guides, and even then, you can have the very same top for example, same size, brand, color, everything, but yet, when you try the first top on, it is a bit too small or large, you try the second one on, and it fits perfectly.(we need universal clothing sizing seriously!)
You see, I am the kind of person that will go into a shop,look at the clothing (not always, but pretty close

) and hold a shirt up, for example and say to the sales person, and or other customers, does this really look like an XXL? and the response is either, well that is a junior sizing, or no, or it is junior, but even for that size, it is small. The whole sizing issue is a big pet peeve of mine, when I went to W of
Disney store last week, I saw a top that had a label that read 3 x, I took a good look at it, and then became irritated, because believe me, it was not! and then asked a CM about the sizing and she agreed that the label was so not correct, so we are both standing there, while I am holding this tiny so called larger size up, (and ready to set fire to it ) o.k. not, but give me a break man! anyway, so we just shake our head in disgust and disbelief. It was not a junior size either, you know that is something that I just love about tiny clothing, cannot fit into it, so I save all kinds of money!

he he! of course when it comes to ironing larger clothing it really does take longer, incomparison to the size 1 or 0 that has a shirt to do the same thing to! I just hope that I don't become so humongo, that it will take me an entire day,to iron one simple shirt! (insert hair raising smilie here)
OMG! what was the topic again? I am joking............ (great big sigh)