Britney Spears has helped raise $1 million US for a childhood cancer charity.
The 35-year-old singer has donated the whopping total - which was raised primarily through her ticket sales from her 'Piece of Me' Las Vegas residency - to the Nevada Childhood Cancer Foundation for its new Britney Spears' Campus, a 16,000 square foot facility which will have more than 45 paediatric and adult services.
The 'Toxic' hitmaker - who has sons Sean, 11, and Jayden, 10, with her former husband Kevin Federline - dubbed the achievement as the proudest moment of her career, and said she was moved to tears by the total money raised.
In a statement, Britney said: "There are many things I've done in my career that I am proud of, but none more than this. The fact that I was able to use my celebrity status to raise the money to build this incredible facility to help sick children and their families when they need it the most not only brings many tears to my eyes, but really brings tremendous meaning to this amazing journey that I have been on."