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And with the author and podcast host now starring in I'm A Celebrity...Get Me Out Of Here! people are discovering the mesmerising performance for the very first time.
If you're yet to watch, you might want to grab some tissues first - it's practically impossible to get through this without shedding a tear or two (or in our case, bawling like a baby).
The speech sees Tom and Giovanna on their wedding day, with Tom stood at the top table explaining to the guests that public speaking isn't really his thing.
But as every McFly fan will know, singing and performing is definitely Tom's thing, and he reveals that he'll be singing his speech instead.
"Giovanna can tell you that the only nerves and anxiety I've had about this wedding has been about giving this speech," he said.
"I absolutely hate public speaking. Me and public speaking we just do not get along at all. Mainly because I don't have any idea about how to write a good speech... But I do know how to write a song. So I hope this isn't cheating myself out of it too much."
The speech begins with Tom thanking all the guests for attending their special day, before apologising in advance for anyone he might have forgotten.
And then, one by one, he goes through friends, family members, best men and bridesmaids, singing adorable tributes alongside a slideshow of throwback snaps.
We were particularly choked up when Tom came to thanks his mum and dad - who could be seen in floods of tears.
But the most touching moment of the performance came when Tom addressed his new wife. To the tune of McFly's 'All About You' Tom was also joined by a choir - which was a total surprise to Giovanna.
"Yesterday you asked me something I thought you knew, but today you made me smile by saying 'I do'," Tom sang.
"Then you whispered in my ear and I said thank you, you have made my life worthwhile by saying 'I do'. I will answer all your wishes, don't need to ask me to.
"And if you deny me one of your kisses, I won't divorce you! So here's my speech but really it's just a song or two. And this one should make you smile, it's all about you."
Seriously, we are bawling. If you want to watch the 14 minute video in full (it doesn't disappoint), you can find it over on Tom's YouTube.
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