the pictures don't give good perspective, but Reeve is the smallest of the three, roseas and smithis are larger. Lady is about half grown, and she's only slightly smaller than Prince, who is adult. (In the tarantula world, females tend to be larger, and live longer. When you add in the fact that smithis are endangered and can't be harvested from the wild, you have a valuable spider on your hands if it's female and of breeding age. Lady, when fully grown, will be worth several hundred dollars. I'm not going to sell her though, I'm going to find males and breed her, then sell the slings.)