I'm giving it 4 stars because for some of my low plunge stuff this is awesome, that would be the low plunge shirts and dresses that have some structure to the shirt or dress already.  I bought this for my wedding dress a very low plunge halter and am content enough with it to wear it, but to make everything work right I'm going to have to use a lot of dress tape.  The dress plunges almost to my belly button and the halter is a very soft satin with little structure in the dress for any additional support.  So there is taping to be done to make sure it doesn't shift out from under the dress and then again so I don't slip out of it accidently.  I wear a 36D bra and a size 8 dress.  I ordered the large and it does fit the cup size right but is loose through out my body.  The support is best with the middle strap but even though it is clear I don't find it to be something I want everyone to see.  I actually am happy to have it though as a bigger bra sized woman it is nice to have options for tops and it can be very hard to find that.