Ready for bed? Exhausted Rihanna emerges from Victoria's Secret show rehearsals with bedraggled tresses

She is know for her ever-changing hairstyles which continue to surprise.
But Rihanna made a shock of a different kind when she appeared to be having a bit of a bad hair day on Tuesday night.
However, the pop star's bedraggled and greasy-looking locks may have had something to do with the fact that she had been locked in gruelling rehearsals for Wednesday night's Victoria's Secret Fashion Show.

Ready for bed? Rihanna emerged from rehearsals for the Victoria's Secret Fashion show with bedraggled hair on Tuesday night

The singer emerged from the Gansevoort Hotel looking exhausted following the practise run.
Her hair appeared messy from the no doubt plethora of products used for the costume rehearsal.
The You Da One star will no doubt be wearing something racy on Wednesday night - it is the Victoria's Secret Fashion Show after all.
In fact she will be in her element.

Too much gel? Her hair appeared messy from the no doubt plethora of products used for the costume rehearsal

Keeping it casual: Rihanna stepped out of the hotel wearing a grey Chanel tracksuit

But as she left rehearsals for the extravagant New York show, she was uncharacteristically covered-up.
Rihanna stepped out of the hotel wearing a grey Chanel tracksuit.
She did however glam the luxurious knitted ensemble up with some black strappy stilettos heels.

Fan favourite: The star looked extremely tired as she made her way through the crowd of fans, eager to get an autograph from the star

The star looked extremely tired as she made her way through the crowd of fans, eager to get an autograph from the star. 
Rihanna is set to perform at the much-anticipated show on Wednesday night for the lingerie giant.
She is expected to sing one of her famous pop songs, and Justin Bieber is also taking to the catwalk stage on the night to perform.
One song Rihanna won't be performing is one of her new tracks from her imminent album Unapologetic.

Exhausted: The pop star looked incredibly tired after the practise run

Track number ten of the album is called Nobodies Business (sic)... and it features Chris Brown.
The bad girl pop star has always been vocal about how no one except her knows the 'real' situation with Brown and how the rest of the world can't presume to understand their feelings for each other.
And the song can't make that sentiment any clearer.
As the Diamonds star landed at JFK in New York earlier in the day on Tuesday she leaked some exciting information to her fans via Twitter...including that ex-boyfriend Brown has collaborated on a track.

What's his secret? Justin Bieber was also seen arriving at rehearsals for the show earlier in the day

Gorgeous girls: Victoria's Secret Angels Miranda Kerr and Doutzen Kroes also strode in for the big practise run

Brown, 23, was convicted of assaulting Rihanna after the 2008 Grammy Awards and was consequently ordered to complete community service and a domestic violence program.
The pair have been spotted at countless events together lately - most recently at Rihanna's Halloween party in Los Angeles where Brown dressed in Arab robes and carried a rifle.
Both Rihanna and the Look At Me Know singer are remaining tight-lipped about their relationship status but according to reports, they plan to announce they are officially back together once Rihanna's album has dropped on November 19.

Touching down: Earlier in the day Rihanna was seen arriving at JFK airport

As part of Unapologetic's promotional plan, Rihanna is planning an ambitious 777 mini tour.
The Umbrella singer has vowed to do seven gigs in seven countries in seven days - and travelling from location to location on Boeing 777.
Currently November 14 in London is the only officially confirmed stop-off
Unapologetic is also Rihanna's seventh studio album in seven years.

Cool girl: She wore another tracksuit and a backwards cap for her flight