Ex rated! Rihanna slips into wildly inappropriate fishnet stockings to celebrate her birthday with Chris Brown in Hawaii

Rihanna has received the birthday gift that she probably wanted the most.
She's been joined by her on-off boyfriend Chris Brown, 23, for her 25th celebrations in Hawaii and today - her actual birthday -  the pair were spotted taking a romantic walk by the water.
But oddly, given the laid back nature of their destination, Rihanna had decided to pull fishnet stockings over her bikini for the tropical stroll.

No missing this pair! Chris Brown held hands with Rihanna as they enjoyed the Hawaii sunshine on Wednesday

She looked as though she'd stepped out of a nightclub in the racy ensemble, which was wildly inappropriate for the locale, and Chris couldn't manage to keep his shorts up.
Brown pulled her along the shore before the couple sat together to take in the view and perhaps whisper sweet nothings.
It's just another sign of how seriously the pair seem to be taking their reconciliation.
And another relationship seems to be on the mend as Katy Perry Tweeted an effusive message to her friend after seeming to ignore her at the Grammys, she wrote: 'HAPPIEST 25TH BIRTHDAY to my baby girl @rihanna! I wish I could b there drinking Mai-Tais & telling haters to eat a d*ck w/u!'
Rihanna just debuted her first clothes range at London Fashion Week.

'Pour it up! Pour it up!' Rihanna Tweeted this shot of the couple later in the day

Just the two of us: Chris steered his on/off girlfriend down the picturesque coast

Tactile: The birthday girl, who turns 25 today, reached for her beau's hand

Holding him close: Rihanna was pleased to see her beau, and wrapped her arm around him

And the pop star seemed to be making the most of the rare spot of R & R as she relaxed in a bikini on Tuesday ahead of her 25th birthday.
Staring suggestively at the camera Rihanna pulled on the straps of her tiny string bikini. The shots revealed the Barbadian beauty's incredible toned stomach.

While Rihanna had spent the weekend working in London, Brown was in Houston where he headlined the NBA All Star weekend.
Also in Houston was his ex-girlfriend Karreuche Tran, who was spotted partying at a different nightclub to the rapper.

Why so serious: The paramours seemed to be deep in conversation

Sharing: Rihanna also tweeted this picture with the caption, '#BIRTHDAYbehavior'

Memories: Rihanna Tweeted this picture from her surprise 20th birthday party, you can see Brown on the left hand side

While they were not photographed together, Karreuche raised eyebrows when she tweeted a picture of an ornate ceiling on Saturday with the caption 'Gnight'.
The picture was reported to be of the inside of a mansion hired by Brown for himself and a group of friends for the holiday weekend.
Karreuche soon deleted the picture, but not before it had sparked speculation that she was staying with her ex.
Rihanna and Brown only went public with their reconciliation at this month's Grammys.

Well they call her Bad Gal RiRi! The star blows smoke out her mouth in a suggestive fashion as she looks straight at the camera

Suggestive: Rihanna pulls at her bikini straps

And relax: Fresh from London Fashion Week, where she debuted her range for River Island, Rihanna posed by the pool in a crop top from her new range