Hollywood star is the latest in a slew of stars throwing their support behind . 
The actress, 55, rocked a stripy Mr Men charity Tk Maxx T-shirt in a beaming photograph, which was shared by Comic Relief on Instagram. 
Julia teamed the look with light-wash jeans and wore her auburn hair in soft waves as she sat on a chair crossed legged for the snap. 
Comic Relief captioned the shot: 'We are in love with the amazing @juliaroberts spreading joy in her Mr. Happy @tkmaxxuk chari-tee.' 
The celebs have come in full force for the occasion, showing their support for this year's Mr. Men campaign, with Julia opting to wear the Mr Happy T-shirt. 
Mr Happy: Hollywood star Julia Roberts is the latest in a slew of stars throwing their support behind Comic Relief by wearing a Mr Men charity T-shirt
Julia joins the likes of Amanda Holden,  and  in the T-shirt campaign.  
Britain's Got Talent judge Amanda teamed her pink top with a pair of crisp white trousers and styled her long blonde tresses in loose waves as they fell past her shoulders. 
She said: 'Red Nose Day reminds us all of what is really important as well as having plenty of fun in the process.
'The house Alan Carr and I have renovated in Scilly (ITV's Amanda and Alan's Italian Job) will be sold at the end of the series with half of the profits going to Comic Relief.
'Me and my girls can't wait to pick up our T-shirts from TK Maxx, featuring our favourite Mr. Men Little Miss characters - mine being Little Miss Fabulous, of course!' 
Meanwhile Fearne rocked an eye catching bright red T-shirt with Mr. Happy printed on the front which she teamed with a pair of washed denim jeans. 
The presenter, 41, also wore a 'Happy Vibes' navy sweatshirt as she styled her blonde locks in loose waves and applied a radiant palette of makeup. 
Fearne said she is 'delighted' to be taking part in the campaign and revealed the new collection has so many 'different designs to choose from'. 
Support: The celebs have come in full force for the occasion, showing their support for this year's Mr. Men campaign with TK Maxx to raise funds  (Amanda Holden) 

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The high street is packed with charity T-shirts, supporting everything from the NHS and mental health organisations to cotton sustainability programmes.


Here, Amanda Holden is showcasing an official Red Nose Day design, which has just launched at TK Maxx.


Created in a vibrant pink hue, this unisex tee features a regular fit and Little Miss Fabulous print. Isn't it lovely? Join in by clicking the image and £5 of the sale will be donated to Comic Relief.


If you're keen to shop around, head to the carousel to check out our edit of charity T-shirts from the virtual high street.














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Happy vibes: Vick Hope looked incredible in her navy Mr.Men sweatshirt which she teamed with skinny black leather leggings
Say cheese: The BBC Radio 1 DJ, 33, flashed her gorgeous smile as she gushed how 'proud' she is to be supporting Comic Relief
She said: 'I've always been a supporter of Comic Relief and am delighted to be taking part in this year's Red Nose Day campaign with TK Maxx. 
'There's so many different designs to choose from so make sure to check out the new collection if you can and help make a difference.' 
Vick Hope looked incredible in her navy Mr.Men sweatshirt which she teamed with skinny black leather leggings. 
The BBC Radio 1 DJ, 33, flashed her gorgeous smile as she gushed how 'proud' she is to be supporting Comic Relief. 
She said: 'I am so proud to be supporting Comic Relief again this year! Red Nose Day spreads an important message of community and hope. 
'Please join me by heading over to TK Maxx and checking out their incredibly colourful T-shirts to show your support and help make a difference'. 
The collection supports Comic Relief's vital work to help children and young people facing the toughest times of their lives whether they are in the UK or around the world.
For the very first time, AJ Odudu and jasa lidar Joel Dommett will host the Red Nose Day night of TV alongside Zoe Ball, Paddy McGuinness, and David Tennant.
, they will be joined by a host of stars and supporters to bring viewers an unmissable evening of comedy, live music, exclusive prizes, and plenty of surprises.
This Red Nose Day will also see some of the nation's favourite famous faces put their willpower and determination to the test in a bid to raise money for Comic Relief. 
Comic Relief will make its return on Friday 17 March 2023 and celebs have come in full force showing their support for this year's Mr. Men campaign with TK Maxx to raise funds (Fearne Cotton pictured)