ANT McPartlin and Declan Donnelly have offered SM:TV Live fans an early festive treat with sneak scenes from the show's re-boot.

The Geordie duo took to their joint Twitter account to upload a 31-second teaser for the reunion episode, set to air on Boxing Day.

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They added the exciting caption: "We’ve popped a little SM:TV in your stocking that we think yule like… back on the same slot as when it started twenty two years ago!

"Set your alarms, Boxing Day at 9:25am on@ITV, you’d be absolutely loopy bonkers to miss it," followed by a Christmas tree Emoji.

The clip starts with Ant and Dec standing on the steps outside the The London Studios with Dec exclaiming: "Wow it's strange to be back isn't it."

They then chat about the first ever on-screen link they filmed from the very same location.

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Dad of one Dec, wearing a blue bomber jacket and white top, said: "I think I remember the link," as Ant exclaimed: "Do you?"

Dec added: "I think it went along the lines of 'wake up, get up, it's Saturday morning ..." before the camera cut to a throwback shot of Ant announcing the original show, which they fronted with Cat Deeley.

Looking like they haven't changed a bit from the show's heyday, a younger-looking Dec told viewers they'd be "loopy bonkers to miss it."

The presenting trio are reuniting for a special show of the ITV Saturday morning hit which they hosted from 1998 to 2001.

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Ant and Dec left in 2001 while Cat stayed on until the following year.

Now 18 years after they left the show, Cat Deeley, 43, has teased fans with a latest look of the episode.

Sitting next to Ant and Dec, both 44, she captioned the pic: "SMTV reunion @antanddec..... All those in favour say "I" ....."

Cat, who is married to fellow TV host Patrick Kielty, re-located back to the UK from LA earlier this year.

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She has told how SM:TV Live's reunion was understandably an emotional one, revealing there were plenty of tears.

Cat, 43, admitted that the trio broke down in tears as they reunited for a special documentary to celebrate Ant and Dec’s 30 years on screen together.

Speaking to radio host Chris Moyles on Radio X on Wednesday, an emotional Cat said: “We have filmed a documentary, it’s going to be aired at the end of the year. We went back to the studio where we did it. They rebuilt the set.”

Cat confessed that they were all bawling their eyes out when they toured the studio where the SMTV set had been rebuilt.

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She added: “ We all cried. I walked in and they were doing their interview and Dec was crying and I was like “ok you’re crying!” and then at the end of my interview I was like [sobs] “waaah!”.

Cat also revealed that the Geordie pair had a tear-jerking moment when they watched the first cut back together.

She said: “We all have a bit of a cry, we take the mickey out of each other, it’s very, very, very cute. I actually got a text message from Ant yesterday saying he’s seen the first cut and they and they cried watching it too.

“So hopefully there wasn’t too much of the first show in it otherwise he would be crying at how appallingly bad we were, we were rubbish!”

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