Katy removes festive fur trimmed coat to reveal VERY sexy fringed leotard as she headlines Jingle Bell Ball

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She wrapped herself in a very dramatic pale blue fur trimmed coat which was reminiscent of Mrs Claus, as she performed Wide Awake.
But Katy Perry’s likeness to Father Christmas’ wife stopped there as it wasn’t long until she whipped off the garment to reveal a sexy leotard as she headlined the Capital FM Jingle Bell Ball at the O2 in London.

Making sure the dress took centre stage, her hair was sleeked off her face in a ponytail which swung about as she moved around.
The songstress started her performance with her debut single and firm favourite I Kissed A Girl.
It was straight on to new songs from there with Prism and Dark Horse, before she was joined by a group of futuristic looking elves for Part Of Me.
Her set also included Wide Awake, as well as, amongst others, Teenage Dream -  much to the delight of the audience.

Olly Murs kicked off the first night of the Jingle Bell Ball and was met by screams from the 16,000 strong audience.
Wearing his trademark skinny jeans the X Factor star started his performace with Army Of Two  before moving on to his big hit Heart Skips A Beat.
Much to the delight of the audience he was joined on stage at this point by Rizzle Kicks, who put on a very energetic performance.

Katy Perry is regal in red velvet gown

If it ain't ba-roque, don't fix it! Katy Perry is regal in red velvet gown and embellished cape at UNICEF Snowflake Ball after being named Goodwill Ambassador

She was named a UNICEF Goodwill Ambassador on Tuesday to help children find their voice.

And Katy Perry looked suitably regal in an unusual ensemble later that evening.

The 29-year-old singer wore a red velvet gown and embellished cape as she posed at the organisation's ninth annual Snowflake Ball at Cipriani Wall Street in New York City.

The Fireworks singer showed off her hourglass shape in the halter-neck frock, but covered her shoulders with a red cape.

Fittingly for the event, the cape sported a pattern of a giant gold snowflake.

Katy wore her jet-black hair in a glamorous curled 'do and added a slick of matte red lipstick.

The pop star was named UNICEF's Goodwill Ambassador earlier that day and she was clearly grateful for the opportunity.

'I believe young people have the power to change their own lives, with our help,' she said.

'I am honored to join UNICEF as a Goodwill Ambassador, and committed to doing everything I can to help children and adolescents who come from such different backgrounds but want the same thing: a brighter future,' she added.

Katy has already been working with UNICEF, having traveled with the organisation to Madagascar earlier this year.

Also at the event was Angie Harmon, who wowed in a risque black-and-white strapless gown.

The top featured ruching at the bust while the see-through netting material offered a glimpse of side-boob.

The 41-year-old wore her hair in a wispy updo and enhanced her glowing complexion with a dusting of pink blusher.