Moni, could you be more specific? Everything I have seen that is in the "ballerina sweater" category is either a pullover sweater with a ballet neckline, or a sweater with ballerinas stitched on it. I've never seen a wrap sweater called a ballerina sweater.

I'd love something that looks like this...Unfortunately, this one is knit.

http://www.sirdar.co.uk/application_data/sirdar/ftp/ProductLargeImages/8580.jpg

This may be a little fussier than you want, but you can modify it to your own tastes.

Here is a link that might be useful: wrap sweater

Here's one for sale in a Berroco book:
http://www.berroco.com/231/231_shelly_pv.html

If you are an experienced crocheter, you could probaby upsize this one as well:
http://www.lionbrand.com/patterns/cjif-balletSet.html

Good luck!

Did you see this one yet?

Here is a link that might be useful: Ballet Sweater