In celebration of the new year, Britney signed 100 limited edition 'Piece Of Me' t-shirts with 100% of proceeds going to Nevada Childhood Cancer Foundation! These T's were available via her Twitter on December 31st, and quickly sold out.

Donate $50 to NCCF here before January 7th to receive an unsigned New Years t-shirt! 

 

I signed 100 limited edition NYE #PieceOfMe t-shirts & ALL proceeds go to the @NVCCF! Get them here in my tweet xo http://t.co/iXcCBrWwRl

— Britney Spears (@britneyspears) December 31, 2014

 

 

And the signed T's are officially sold out! Thank you SO MUCH to my fans who donated. Your big hearts make me so proud!

— Britney Spears (@britneyspears) December 31, 2014

 

 

To show my appreciation, this exclusive t-shirt is available unsigned for any $50+ donation! http://t.co/CFirHujEwf pic.twitter.com/6c5lhcYZam

— Britney Spears (@britneyspears) December 31, 2014