If you want to show it off, this suit does the job.  It can also be worn as underwear, if you are less demonstrative.  I have several pair of these and wear them as both swimsuit and underwear.  I think that they fit very well, and make me feel good wearing them.  I recommend them to anyone who isn't too shy.  They don't leave a great deal to the imagination...
When ordering use your hip measurement as the waist size.  They really don't come anywhere near the waist.