Rihanna wears a tiny gold two-piece for a sexy photo shoot on a yacht in Rio

If there is a defining item of clothes that best encapsulates the pop icon that is Rihanna, it has got to be the bikini.

Over the last few weeks, the Bajan singer has rarely been seen out of a skimpy two-piece, and that didn't change on Sunday when she took part in a photo shoot on a luxury yacht in Rio.

Opting for a gold number on this occasion, Rihanna, 25, showed off her enviable physique, and just why the bikini was pretty much made for her.

Her most recent match-up was with Colombian singer Shakira, where Ri-Ri featured on her latest release Can't Remember To Forget You.

Taken from Shakira's upcoming fourth English and overall tenth studio album, the single reached No. 11 on the Official UK Singles Chart, giving the singer-songwriter her 11th UK Top Forty hit and Rihanna her 39th.

However, their chart success so far hasn't matched that of Pitbull's new single Timber, for which Ri Ri was offered the featured vocals. She turned it down because she wouldn't have time to do both, so Ke$ha was brought in as a replacement. http://www.thefashioncentral.co.uk/fashion-models-list/

Timber currently sits at No. 3 on the UK Singles Charts, and No. 1 on the US BIllboard Singles Charts.