Mark Zink's bikinis complement Rihanna's ''sensuality''.

The former Design Director of Victoria's Secret is flattered the 'Diamonds' hitmaker is a regular wearer of the swimwear from his label Charlie and believes his designs are ideal for her ''confident'' and attractive nature.

He told Grazia magazine: ''I have put so much energy and commitment into making the perfect string bikini. I also take a simple timeless approach to swimwear to make sure you get the attention, not your bikini. In the end, people are sexy not clothes.

''Rihanna's sensuality and youthful energy make her the perfect Muse for Charlie. I think our styles help celebrate Rihanna's natural confidence and sexuality. I can't tell you how proud I am to have her as a [Charlie fan].''

The 26-year-old beauty personality thanked the fashion designer for his hard work put into a two-piece she was wearing in an Instagram photo posted last week, which shows her posing by a Miami poolside.

She wrote: ''Shout out to my lover @charliebymz Thank u for designing what has to be my favorite bikini of all time! (sic)''

Zink - whose swimwear is also worn by the likes of Kim Kardashian, Jennifer Lopez and Lea Michelle - recommends a simple black number while lounging in the sun and encourages females to ''enjoy'' the experience of flaunting their figure.

He added: ''Enjoy it! Make sure you always have a high quality, simple, solid black bikini in your favourite silhouette. I always find a bit of tan helps me get in the mood when I try on new styles. And never forget... every bikini is worn best with a smile.''