Rihanna to auction her Xmas tree

American R&B singer Rihanna (left) is putting up her 2014 Christmas tree for sale as part of an auction for her second annual Diamond ball charity event. She will front the blacktie fundraiser in Santa Monica, California, US, to help raise funds for her Clara Lionel Foundation. As part of the benefit, she will also auction off a number of personal items. The tree consists of five separate units covered in black ice crystal mesh fabric with over 20,000 faux black ice crystals.