Is Rihanna Now Gay?

From quad-biking while drinking and smoking to partying several nights away with pals, there's no denying that her Mediterranean holiday has been one to remember.

But Rihanna, 26, added an extra touch of spice to her recent trip when the super-yacht she was staying on rolled into Ponza, Italy.

The singer was seen getting cosy with a female pal as they soaked up the sunshine on the upper deck of the luxury vessel.

The star sat opposite her topless friend, who boasted a full sleeve of multi-coloured floral tattoos, as they put their faces close together while chatting and using their phones.

Rihanna then playfully put the end of her friend's colourful headscarf between her front teeth.

With her long curly hair pinned up, Rihanna showed off her curvaceous body in a glittering purple string bikini.

At other points in the day, she was seen wearing a pair of rose-tinted glasses as she also chatted with other pals on the boat and enjoyed a few cold drinks.

Never one to laze the day away, Rihanna also sailed into the water to enjoy a spot of snorkelling around old pirate caves with her pals.

For the excursion, Rihanna swapped out her purple ensemble for a bright yellow and orange bikini during excursion.

As she emerged from the water, the Grammy winner was sure to grab herself another cold beverage, which she sipped on while floating along in the water.

Rihanna's trip came as she marked nine years since the release of her debut album, Music Of The Sun, which hit shelves on August 30, 2005.

'Thanks to all of you who've supported me throughout the years! I cant believe, already 9 yrs! I owe it to you man,' she wrote to her 37 million Twitter followers.

Reports by Ryan Smith