To swim laps, I use a Speedo swimsuit that I bought at Dick's Sporting Goods two summers ago (they price-matched with Amazon, which was nice). It's due for replacement.
My favorite swim theme is 'Bond girl', and I have several suits in rotation for poolside/beach
1) The Vodkatini by Freya (Picture Number 1). I love it so much, I duplicated it, against the inevitable sunscreen marks, fading, and/or ketchup from cookouts. This style is several years old; their current Bondi style is similar
2) A vintage hot pink St. John bikini with gold trim.
3) A purple reversible bikini by Becca
4) A black one-piece with a black mesh waist and a pink belt.
5) A black halter-style with a zip front
6) A vintage embroidered, flamenco-themed one-piece halter by Gottex, which has a matching sarong.
7) For this summer, I purchased a new floral one-piece by Desigual, on eBay. (Picture #2)
Depending on how my other swimsuits hold up this summer, I might or might not purchase another Freya bikini. I wear a 30-32F and the suit I have is very comfortable and supportive - and nothing moves while I wear it. I'm particularly drawn to their Sundance and Bondi styles.
I used to have a white bikini that I adored, until time, wear, and sunscreen stains finally killed it a few years ago. A new white bikini is my HEWI.