made a surprise appearance on during a cameo-filled Red Nose Day film.
The annual charity telethon returned on Friday with a host of celebrities joining in on the fun with a series of sketches for Take Yourself Funny for Money.
Hollywood actress Julia, 58, starred as part of the charity fundraiser, hosted at MediaCity in Salford, in 's sketch.
Addressing hosts and , Catherine appeared on stage as her character, foul-mouthed Nan, and informed the audience that she had invited the 'big stars,' before a series of A-listers appeared on screen.
Speaking in a video, Julia said: 'Thank you so much nan for your kind offer, I would love to appear on Red Nose Day, I'll be there in a jiffy!'
The actress was joined by a host of special guests including Sir , Bryan Cranston, Samuel L. Jackson and .
Julia Roberts made a surprise appearance on Comic Relief during a cameo-filled Red Nose Day film
And it didn't stop there, with Vanessa Williams, Rio Ferdinand, Dame Anna Wintour, Jack Whitehall, Marianne Jean-Baptiste, Lord Alan Sugar, Olivia Dean, and Daniel Craig also featuring on the show.
It's not the first time Julia has appeared as part of the charity fundraiser as she also joined in via video link back in 2024.
Money raised by Red Nose Day goes towards organisations helping to tackle homelessness, poverty and mental health along with other causes in the UK and throughout the world.
Earlier in the day screamed with joy as he learned he has raised £2.8million for his Comic Relief bike challenge - just miles from the finish line in .
The Radio 1 Breakfast DJ, 40, is cycling 1000km in eight days on a tandem bicycle, and has been surprised by family and friends along the way, including Prince William earlier this week.
Greg set off from Galashiels in the Scottish Borders on Friday morning for his final day of cycling and started the day with a total amount raised of £2.5million.
Just over an hour later, Greg took a break from cycling for a pit stop in North Middleton, Midlothian - just 16 miles from his final destination of Edinburgh.
During the pit stop, Greg spoke to radio host Matt Edmonson, who revealed the total money he has raised had jumped up to £2,823,694.
Hollywood actress Julia, 58, starred as part of the charity fundraiser, hosted at MediaCity in Salford, in Catherine Tate's sketch
Speaking in a video, Julia said: 'Thank you so much nan for your kind offer, I would love to appear on Red Nose Day, I'll be there in a jiffy!'
'2.8 million!! YESSS!' Greg screamed, before adding: 'Wow. We're really moving! It is stupid now. But that's fun. Silly things are fun aren't they?
'Let's keep doing this silly thing and let's get it up to three. Do it for Arthur. Do it for Arthur and his big seat.'
At the beginning of the clip, Greg said: 'I've asked for a silly total yo hand over to Comic Relief at the end of today. What are we on right now? Let's go.'
'Okay so when we last had a total it was £2.5million, which is crazy,' Matt said.
Matt then added: 'We've only been on air for an hour and eight minutes. So let's find out what the new total is...'
Greg screamed with joy with joy at the total reveal of £2.8million before preparing to finish the route.
