The straps are anchored in front and only convertible on the back, so this bra cannot convert to strapless or be used for halter or single strap configurations.
I recommend ordering a cup size down for average projection breasts.
This bra is absolutely adorable. By far the cutest one I own. I was really excited to have another molded bra but unfortunately this just doesn't fit that well. I have a very projected shape, and I don't think the cups are quite deep enough for me. However, this doesn't get the same crease at the bottom as other too-shallow bras do. Instead, the part of the cup I don't fill is slightly down and toward the outside of the cup from center. Somehow, the spare boob gets forced out to the sides (even though the bra isn't east-westy) leaving me with more armpit squidge than any other bra I've tried (even though the bra isn't much too small in the cups after swoop-n-scoop). The wire is uncomfortable and stabby on the outer edges, and the straps are set extremely wide. I'm mystified by the weird fit issues every time I wear it, but it's sooo cute. Also gives good cleavage though little lift. Lace looks like it would show under shirts but doesn't seem to.
This bra is an awesome t-back. It is a bit awkward to get on and into place but once you do it give a really nice and rounded shape with good cleavage.