A politician's "spur of the moment" charity idea left her more than £14,000 down after promising £1 for every retweet she got on Twitter.
This year's Comic Relief has raised a record £75.1 million so far, beating 2011's total of £74.3 million.
Jessie J is set to shave her head live on television in a bid to raise money for Comic Relief.
– Richard Curtis, Comic Relief co-founder
Once again the extraordinary generosity of the British public has put Comic Relief in a position to be able to serve thousands upon thousands of people with very hard lives in Africa and the UK.
It's almost impossible to thank enough all those who took part in the event, all the members of the public who fund-raised and all those who gave so generously on the night.
Ricky Gervais returned to our screens as David Brent last night, all to raise money for Comic Relief.
The special shows what happened to Brent 10 years after The Office ended.
Taking to Twitter, Gervais wrote, "Thank you for all your amazing comments about Brent's Return. I had a blast".
Jessie J has thanked her fans for donating to Comic Relief after having her head shaved live on television to raise money for the charity.
She wrote on Twitter, "I am soooo thankful to everyone who has donated @rednoseday and supported me tonight! My heart is filled with with happiness! Lets make a change! X"
The singer said shaving her head "is the smallest thing I can do to give back to these people who need it so much".
Jessie J has raised more than £500,000 so far by having her trademark locks shaved off.
Fiona Mactaggart MP has pledged to donate £14,268 to Comic Relief, after saying she would donate £1 for every retweet she received before 9 pm of a tweet sent earlier this evening at 8:25 pm.
Ok stop now I owe comic relief£14,268. Phew! Cheque soon if you don't believe me check with comic reliefFrom @fionamacmp on Twitter:
Fiona MacTaggart, MP for Slough, has pledged to donate £1 to Comic Relief for every retweet she receives for the tweet posted below before 9 pm.
At the time of writing, the tweet has received thousands of retweets.
I will give £1.00 to Comic relief for every retweet of this message before 9pmFrom @fionamacmp on Twitter:
Comedian and actress Miranda Hart turned wedding planner as she was challenged with arranging a real marriage ceremony in a matter of hours for Comic Relief.
The star of Miranda and Call the Midwife was given the task as part of her week of work for Comic Relief, called 'Miranda's Mad March' - which has seen her organise a dog show and perform a routine for Strictly Come Dancing.
Hart was told of her latest task during a live broadcast on Radio 2 by DJ Chris Evans. The lucky couple were Claire Gilchrist, 26, and Ben Pringett, 28.
Catwalk star Kate Moss put in a model performance on air when she read an extract from the steamy bestseller Fifty Shades of Grey to raise money for Comic Relief.
The British model had to suppress giggles as she read from the E L James novel during the Nick Grimshaw's Radio 1 Breakfast Show.
Singer Lily Cooper and comic David Walliams also joined her in the studio, raising more than £250,000.