I'm really pleased with how this came out. I used a yarn called smoothie and it is certainly very smooth, silky and stretchy. My plan is for this to be worn over long sleeved tops for winter, kind of like a tank top. The colours aren't what I would usually pick but the ball looked so different I thought I'd go with it. Phoebe really likes it so hopefully it will get a lot of wear. The pattern is cap sleeved spring top by Shelley Flloyd (I think!). I'll be posting it up on ravelry soon!
Edited to add: The pattern is Girl's cap sleeved spring shirt by shellee floyd.