I made this doll for my niece's third birthday. There is a how-to video, tutorial and pattern available on Martha Stewart; you can find it HERE. By the way, she's not wearing a belly shirt, ha ha! The middle fabric is actually pink but from this picture it looks like she has on a two piece.
These dolls come together really quick and can be made entirely out of scrap fabric. If you make them, make sure you notice that there is not a seem allowance for the arms and legs so you sew right on the line otherwise you are going to end up with some skinny, little stick arms! Another tip, I used a fine-point permanent marker for the face instead of painting it on and a colored pencil to make rosy cheeks and it seemed to work just fine!
Linking to Someday Crafts.