Kate Middleton showed off a teeny tiny waist at a Charity Event on Wednesday night.

The 29-year-old Duchess of Cambridge visited Centrepoint's Camberwell Foyer to bring some holiday cheer to homeless youth.

Dressed in a hunter green turtleneck dress, Kate showed off her petite waist cinched with a black belt. She paired the look with sheer black tights and knee high black suede boots.

Prince William opted for a casual look as well in corduroys and a royal blue pullover sweater.

The national charity Centrepoint provides housing and support to improve the lives of homeless young people aged 16 to 25. Kate and William took part in a healthy living cookery session.

In the kitchen of the south London homeless center, Kate and William wore white Centrepoint aprons and baked mince pies for the residents. They also decorated gingerbread biscuits (cookies) with some youngsters, reports Us Weekly.

William has been assisting Centrepoint since 2005. Kate joked to William, Does this mean you're going to make me mince pies when we get back [home]? William laughed.

This was far more casual attire then the couple wore at another outing this week.

Kate Middleton had the crowd wowed on Monday night at a military awards ceremony at the Imperial War Museum in Central London.

The Duchess of Cambridge wore a luxurious black velvet Alexander McQueen gown paired with a diamond choker necklace decorated with petite cerise flowers (which she reportedly received as a wedding gift). Middleton looked gorgeous with flowing curled locks and lush eyelashes.

She was joined by the equally dapper Prince William and Prince Harry, who wore matching tuxedos. The royal threesome presented awards to members of the British forces, commending them for their service.

Meanwhile, Queen Elizabeth and Prince Philip are prepping for what will reportedly be the biggest Christmas gathering the monarch's Sandringham estate has seen in years. A total of 27 guests are invited to the royal fete, reports CBS News.

Kate will attend the Christmas Eve and Christmas Day events sans her family, as her sister Pippa is not invited until Boxing Day.

This holiday will also mark a milestone for Middleton. Despite the fact that the lovely duchess has been dating Prince William for ten years, she has never attended Christmas weekend at Sandringham manor - the queen's sprawling 20,000-acre estate complete with an 18th century castle. Catherine will learn quickly that this is not like any Christmas she has had, said a source.