Tom Fletcher kicked off Father's Day with a special mention to his dad, but also by reflecting on his role as a new parent, since the arrival of his baby son Buzz.
Tom, who was recently crowned Celebrity Dad of the Year by comic book giants Marvel, took to YouTube to post another of his heart-warming video messages, in which his three-month-old tot makes a guest appearance.
"It was the most insane experience of my life," said Tom in the home-made clip, referring to the birth of baby Buzz. "For me to be in the room and to witness that was unbelievable."
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Tom Fletcher celebrates Father's Day
The McBusted star, 28, went on to reminisce about the "incredible" UK and Ireland tour the supergroup have just wrapped, and to thank his "amazing" father for the support he has received over the years.
Scroll down to watch Tom's video
"Thank you for giving me the most amazing opportunities in my life. If I can be half as good a dad to Buzz as you are to me, then Buzz is a very, very lucky boy indeed," said Tom, before holding up his new award. "I would vote you best dad because you're awesome. Love you dad."
Tom Fletcher and baby Buzz
GALLERY: Celebrity dads celebrating Father's Day for the first time
While the self-branded "chief nappy changer" celebrated Father's Day with a video, other stars have also taken to Twitter and Instagram to post tributes to their special dads.
Click on the photos above to see who's posted what...