Iguana not growing?

I have two iguanas, one, the female, is only two and a half feet long and shes 3 years old. Why is she so small? I give her a diet of calcium sprinkled collard greens, mustard greens, yellow squash and the occassional hibiscus. The male is 1'9 and he isn't growin much either. They have their proper lizard heat bulb and a uvb light and a huge cage plus a shallow bowl thats big enough to get in a good soak. Their green iguanas and Im starting to get concerned that their so small, is it just because they havent hit their growth spurt yet? Ive taken them to a vet and they completely ignored the growth question and just started rounding up a surgrey cost because the female had a small bump on her leg, which we took her two a new vet and a few daily doses of medication cured it, obviously they didn't know what they were doing. Am I just having motherly worries or is this something I should really be concerned about?
Iguana not growing?
Just because iguanas can get huge doesn't mean all will, it sounds like they are healthy and well cared for, don't worry. Also iguanas grow slowly as they get older
Reply:maybe you haven't notice unless you have measured her, if so she just different not all iguana including animals of all kind grow at the same time they just different kinda like when you have a friend and he the same age as you, what the chance of him being the same height as you

but if this didn't help you i hope someone else give you a better answer or go to a vet or find a vet that specialize in reptiles on the internet and see if they provide their email and ask them

I've don this before checking for a email of a vet online
Reply:make sure you give your iguana plenty of fruit and veggie variety,

like carrots shredded, kale, squash like you give them now and lots of other healthy fruits. I had one and my vet said that as long as he was a good green color and active he was OK. good luck. also check with your local pet store and see if there is anything else you can give to them.