Rihanna smolders in a bikini

Rihanna looks sexier than ever as she lowers herself into the water in Portofino, Italy.

The singer poured her curves into an itsy-bitsy leopard print bikini and was living it up on her private yacht, downing champagne straight from the bottle.

She is rumored to have been with Drake and Chris Brown during her trip across Europe.

Her style has caught the attention of Nicola Roberts, who says she identifies with Rihanna's fashion sense.

The 'Beat Of My Drum' singer - who worked with Rihanna on Sky Living's new fashion series 'Styled To Rock' - says she feels akin to the superstar and her bold dress sense because they share the same love of experimentation and originality.

Nicola told LOOK magazine: "I don't have any rules when it comes to fashion and I think she's the same.

"She's truly original. She portrays what she wants to portray through her clothes, and it changes all the time.

See more photos Rihanna and morebikini pics in the gallery below.

"And that's something I try to do."

The flame-haired beauty is famed for her quirky and feminine style, but admitted she gets bored easily and constantly feels the need to mix it up.

Nicola explained: "I often say I've found my style, but in six months it'll be different.

"Hair, make-up, style, music taste - it's always changing. I'm very fickle.

"It's just fun to try new things - like pink hair this year. I get bored so I change my look all the time."

Nicola joins Henry Holland and Rihanna's stylist Lysa Cooper on the judging panel in the hunt for the next big fashion designer.

© Bang Showbiz