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OTRC: Kate Middleton to have 'low-key' 30th birthday celebration

No big birthday bash celebration for Kate Middleton, formally known as the Duchess of Cambridge, on her 30th birthday.

Instead, palace officials tell the Associated Press that Kate, who turns 30 on January 9, will have a "low-key and private" affair. There were rumors in the press that Kate was set to celebrate with an '80s themed party thrown by Pippa Middleton and Prince Harry.

On January 8, Prince William and Kate were seen on the red carpet at the the premiere of Steven Spielberg's movie "War Horse" in central London.

On January 6, it was reported that Kate chose which charities she is going to support as part of her duties as the Duchess of Cambridge.

She recently accepted the honorary positions of Patron of Action on Addiction, Royal Patron of East Anglia's Children's Hospices, Royal Patron of The Art Room and Patron of the National Portrait Gallery, London, according to a statement posted on the official website of the Prince of Wales, aka Prince Charles, William's father and the first in line to the British throne.

The duchess, who is often referred to as just Kate, turns 30 on Monday, January 9. The announcement was made on Thursday.

Kate has often accompanied her husband during visits to charities he supports formally (see photos from the couple's December visit to a youth shelter, during which the prince showed off his dance skills). William's late mother, Princess Diana, was known for her humanitarian efforts around the world.

"The Duchess has chosen to support organizations that complement the charitable work already undertaken by her husband," the statement said, adding that the Duchess of Cambridge is also set to become a volunteer in the Scout Association.

Kate and her sister, Pippa Middleton, are former Brownie Scouts.

The group Action on Addiction operates treatment centers for people battling substance abuse. East Anglia's Children's Hospices supports children and young adults suffering from life-threatening conditions. The Art Room is a charity that helps troubled children through art, psychotherapy, teaching and social work.

The National Portrait Gallery, located in London, is a popular tourist attraction that also contains sculptures and videos.

Kate's role amongst the Royal family is still developing. The royal family considers patronage of charities an important aspect of their social role, and frequently makes visits and attends events to boost the charities' profiles. William is involved in many diverse nonprofits, while his mother, the late Princess Diana, was well known for her active support for numerous charities including organizations that helped AIDS patients.

On top of such duties, the duchess also has a busy year ahead with the queen's jubilee, a major celebration of the monarch's 60 years on the throne that will take see numerous celebrations throughout Britain and the Commonwealth, peaking in a major celebration in London in early June.

The royals are expected to play a supporting role by traveling overseas to represent the queen. William and Kate are due to journey to Malaysia, Singapore, the Solomon Islands and the tiny Pacific island of Tuvalu as part of the festivities.

Kate married William, 29, in April of 2011 in a televised Royal Wedding in London. The two have become popular celebrities even outside of their native England and visited the United States last summer.

The two live in a temporary residence at London's Kensington Palace, where other members of the Royal Family also live and work. The facility is being renovated and is set to open again on March 26, with sections available for public viewing.

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