1. Wear out your current bathing suits
2. Plan a tropical vacation with 2 bathing suits required
3. Order new suits about a week before leaving
4. Receive suits 2 days before leaving
5. Have to keep them, whether you like them or not
Worked for me. I lucked out with an Eddie Bauer code last year. I got a miraclesuit halter tankini for about $40. Had to keep it, my other one was pretty beat up.
I got lucky. Not only did it fit, it looked good too
Good luck shopping. I've honestly had my best luck shopping online.