Where can I find these gymboree pants?

[mastry]

There have been some great consignment sales in my area and I found a top from the old gymboree tea party line. Now I am trying to find matching pants in 12 - 18 months. However, I haven't seen the right size on Ebay. Does anyone know of websites that would have something like this for sale?

I attached a picture of what I'm looking for...