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OTRC: Kate Middleton chooses her charities before 30th birthday

Kate Middleton, the UK's Duchess of Cambridge (pictured) visits the homelessness charity Centrepoint, of which her husband, Prince William, serves as a Patron, on Dec. 21, 2011. Centrepoint provides housing and other support for homeless young people in London.

Kate Middleton has finally decided which charities she is going to support as part of her duties as the Duchess of Cambridge, a title she received when she married Prince William less than a year ago.

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 attended her first solo charity event on October 26, at a dinner for In Kind Direct, a charity founded by Prince Charles that encourages companies to donate their surplus goods to charities.

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.

The palace's security system is set to be upgraded as well, with "an 'air lock' double-door system, advanced CCTV system, special pop-up bollards and spiked railings, according to ABC News.

William and Kate are set to move into a new four-story, 20-room apartment within Kensington Palace in 2013, officials say. William's younger brother, Prince Harry, is then expected to move into their old home.

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