There are some flannel pajama sets that are on sale for $19.99 (online & catalog) right now. They have size XS-L, and they also indicated short or medium or long. I saw those pajama in the store and tried it on. Basically I need to know if the one in the store is short/medium/long because I tried on the XS in the store and it kinda long for me (I'm short that's why).

Lonely Star, my guess is that the pj pants you've seen in the stores is medium length. Stores tend to make pants come in a "regular" length when there's not a variety of pant length sizes.