A year ago, Jessie J announced her intention to shave her head for charity, and now she's making good on her promise.

In a series of tweets , the British pop star wrote, "I have spent a long time making sure that when I do shave my head I raise as much money as possible for charity. I have been waiting for the perfect time and the right charity.  But also a charity that can get my amazing fans involved too."

She then went on to say , "I am SO excited and honoured to be able to finally officially announce I will be shaving my head LIVE for you ALL to watch in March 2013 for @rednoseday :D #letsraisesomemoney."

"Red Nose Day" is a British event held each year to raise money for Comic Relief, a charity dedicated to helping the poor and the disadvantaged, as well as "tackling the root causes of poverty and injustice."  "Red Nose Day" is usually celebrated with a blowout TV fundraising special, and that's where Jesse plans to take a razor to her raven locks.

#JessieJheadshaveRND was soon trending worldwide, along with #JessieJdaresyouRND, with some fans pledging to shave their heads as well, and others photoshopping pictures of Jessie bald.

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