Chelsy grows up: Harry's girl turns up for midnight rendezvous with Prince in classy black gown

We are accustomed to seeing her falling out of nightclubs with a drink or cigarette to hand.

So Chelsy Davy was almost unrecognisable as she made her way to Clarence House in a long, demure black ball gown, for a late-night rendezvous with her boyfriend Prince Harry.

The 23-year-old's outfit was swathes of fabric away from the thigh-skimming skirts she has chosen in the past.

Chelsy Davy
Chelsy Davy

An elegant looking Chelsy Davy arrives at Clarence House in London

Elegant shoes, a matching clutch bag and pashmina completed the transformation.

Perhaps Prince William's girlfriend Kate Middleton, 26, should take the credit for the change.

Renowned for her classic outfits, Miss Middleton is said to have suggested her friend keep a low profile and avoid paparazzi while out on the town.

Chelsy Davy

Party girl: Miss Davy in 2005

Or perhaps Miss Davy, studying law at Leeds University, was simply dressing to match her man.

Harry, 24, had attended Buckingham Palace banquet for his father's 60th, hosted by the Queen, on Thursday.

Miss Davy and Miss Middleton were not invited, but are on the guest list for Prince Charles's Highgrove party tonight, organised by Camilla.

Miss Davy recently drew admiration from the U.S. socialite Paris Hilton, who met her in London.

'Chelsy was absolutely stunning and such a sweetheart. We chatted for ages,' she said.

Chelsy is better known for her brash dress sense.

She was pictured in September wearing a white tracksuit and 'bling' jewellery at a chav-themed fancy dress party.

The Prince, 24, and Chelsy have been apart a lot recently after Harry spent a month training with British troops and only returned from serving in Afghanistan in March.

And he also took part in a charity motorcycle rally in South Africa with brother Prince William across 1,000 miles of dangerous mountainous terrain last month.

Prince Harry and Zimbabwean-born Chelsy started dating four years ago.

Last month he rushed back to be at Chelsy's bedside after she had her wisdom teeth removed in hospital.

She was in so much pain that medics decided to operate and the Prince cut short his stay in Canada to visit her in hospital.

Prince Harry

Prince Harry and Miss Davy, pictured in June, started dating four years ago

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