Hello, I have 2 pieces of brand new, ribbed tank dress in pale pink (size 4T).
It's stretchable and fits snugly, should fit a small sized 4 year old. The material is comfortable but a little thin, suitable for home wear or with a pair of tights. Letting go at $6.00 per piece (postage included).
Picture and info of the dress: http://www.dharmatrading.com/html/eng/11981378-AA.shtml