Jason Isaacs has shared a hilarious tribute to his Harry Potter co-star and favourite son Tom Felton on his 31st birthday.
Jason played villain Lucius Malfoy in the fantasy film series, while Felton played his son Draco, Harrys main nemesis at Hogwarts School of Witchcraft and Wizardry.
And just like a regular dad, Jason couldnt let the day go by without throwing about a couple of embarrassing photos of Tom.
The 55-year-old tweeted: Happy Birthday to my favourite son.
Youve brought the Malfoy name into horrendous disrepute by turning out to be a gorgeous human being and a fairly average guitarist.
He threw in a cheeky final sentence, as he wrote: Im so ashamed and proud of you, before he added the hashtag #BrunettesHaveMoreFun, in reference to the pairs trademark striking blonde locks during the series, evidently not a thing taken into real life.
The 55-year-old actor also wrote LuvYa, while sharing an image of himself and his son cheesing as a young actor right at the start of the Harry Potter series, in the makeup chair as Draco.
Tom starred alongside lead actors Daniel Radcliffe, Rupert Grint and Emma Watson in the hit film series inspired on JK Rowlings novels about the boy wizard.
Fans watched as the actors grew from childhood into adulthood between the years of 2001 and 2011 when the last film was released.
More: Harry Potter
But Harry Potter is not the only fictional world Tom can be found in as he also appears in films like Rise Of The Planet Of The Apes, Belle and A United Kingdom.
Tom has also dabbled in music with the release of a handful of EPs and singles as a singer-songwriter and guitarist.
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