If you're looking for a shaper specifically to smooth your back, then this will work.  However, if you're expecting much in the way of support for your bust, it may prove to be disappointing.

For the most part these body shapers are on the pricey side.  Because of this I went and did as much research on the internet as possible to make sure I was going to be happy with my purchase.  A few reviews said that one of the advantages of this shaper was that you didn't need to wear a bra as well and somebody even said that it made her bust look "perky".  Well, I experienced totally the opposite - it completely flattened my boobs.  I normally wear a 38B and would've been lucky to look like I had an A cup after putting this on.  I ended up looking like a boy. :-(

If your main concern is to use this to smooth those unflattering bulges then you'll be okay.  It does works well for that.  But beware that it may "smooth" other areas that you'd rather not have smoothed out.